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DITTO

Ditto (DITTO), formally known as the Intelligent Auto-Generation and Composition of Surrogate Models, is a research initiative by the United States Defense Advanced Research Projects Agency (DARPA) aimed at leveraging third-wave artificial intelligence to automate the creation and integration of surrogate models for simulating complex microelectronic systems. Launched in 2020 as part of DARPA's Artificial Intelligence Exploration program, Ditto addresses the computational inefficiencies of traditional high-fidelity simulations by developing AI-driven frameworks that generate approximate models capable of mimicking system behaviors with reduced resource demands, thereby accelerating the design and testing of advanced military technologies. The program emphasizes machine learning techniques to hierarchically organize and compose these surrogates, enabling rapid evaluation of multifaceted engineering challenges that previously required extensive manual modeling and supercomputing power. Key achievements include the awarding of contracts to collaborators such as , the , Julia Computing, and , each focusing on distinct aspects like microelectronic simulation acceleration and shared-experience for model refinement. These efforts target up to 1000-fold speedups in simulation times, prioritizing empirical validation over heuristic approximations to ensure causal accuracy in predictive outcomes for applications, including and autonomous systems. While Ditto has advanced AI's role in by bridging data-driven learning with physics-based realism, it has not faced notable public controversies, though its military orientation underscores ongoing debates about the dual-use implications of such simulation technologies in broader commercial sectors. The initiative aligns with DARPA's broader Electronics Resurgence Initiative, fostering innovations that prioritize verifiable performance metrics amid critiques of over-reliance on black-box AI in .

History

Founding and Early Development

DITTO was founded in 2011 in by Kate Doerksen, Sergey Surkov, and Dmitry Kornilov, with the initial goal of developing virtual try-on technology to enable accurate online visualization of eyewear fit on users' faces. The company's pioneering approach addressed a key barrier in for and by creating the first system that simulated realistic frame placement using user-captured facial data, rather than static images or generic avatars. In its early development phase, required users to upload a short video of their face for , allowing the software to generate personalized try-on experiences integrated into retailer websites. This technology was publicly demonstrated by co-founder and CEO Kate Doerksen (also referred to as Kate Endress in some records) at in September 2012, highlighting its potential to reduce online return rates through enhanced purchase confidence. The demonstration emphasized the system's use of to account for facial contours, bridge fit, and temple positioning, distinguishing it from earlier 2D overlay methods. To fuel expansion, DITTO secured $3 million in funding in April 2012 from investors including First Round Capital and SV Angel, specifically earmarked for refining its virtual try-on capabilities and scaling to retailers. This capital supported initial licensing agreements with online sellers, marking the transition from to deployment and laying the groundwork for broader in the optical sector. By focusing on empirical fit accuracy over aesthetic previews, DITTO's early innovations prioritized reducing buyer uncertainty, as evidenced by its core mechanic of video-based facial scanning.

Growth, Rebranding, and Partnerships

Ditto secured $5 million in Series A funding in November 2014, enabling expansion of its virtual try-on platform amid a pivot toward broader integrations for retailers. This capital infusion coincided with the launch of a rebranded website, emphasizing enhanced fit quizzes, style recommendations, and virtual fitting tools to improve online conversion rates for designer sales. The rebranding supported strategic partnerships, including an integration with to embed Ditto's technology into their online sales channels, allowing customers to virtually try frames from a wider inventory than physical stores could accommodate. By 2020, Ditto expanded collaborations to include Materialise, combining its AI-driven recommendations and virtual try-on with for customized eyewear production and fulfillment. These developments fueled steady adoption among global brands and retailers, positioning as a key enabler of experiences by its 10-year milestone in 2021, with the platform powering recommendation engines and try-on features across multiple sites. The company's B2B focus grew its reach, serving forward-thinking clients seeking data-driven tools to reduce returns and boost sales through precise virtual fitting.

Acquisition by Fittingbox

Fittingbox, a virtual try-on technology provider founded in 2006, acquired Ditto Technologies, Inc., an affiliate of Luna Solutions, LLC specializing in eyewear virtual try-on, on October 18, 2023. This marked Fittingbox's first acquisition since its inception, aimed at consolidating its dominance in the eyewear virtual try-on sector. As part of the transaction, CNT Holdings, the parent company of Luna Solutions and , acquired a minority stake in Fittingbox, while founders Benjamin Hakoun and Ariel Choukroun retained majority ownership alongside existing investors Fielmann Group and JINS. The deal integrated Ditto's recorded video-based try-on capabilities with Fittingbox's live and technologies, creating a unified platform to enhance realism and user engagement in digital experiences. Strategically, it expanded Fittingbox's to 25 patents and bolstered its global customer base, establishing the largest portfolio in the industry across the , , and . Fittingbox CEO Benjamin Hakoun stated that the merger would advance the company's mission to deliver superior digital solutions, while CTO Ariel Choukroun emphasized continued investments in , , and graphics for innovation. No financial terms were disclosed in the announcements.

Technology and Products

Virtual Try-On System

The DITTO Virtual Try-On System is a patented augmented reality platform designed for eyewear e-commerce, enabling users to visualize frames on their face through a digital 3D facial model generated from webcam or mobile device video footage. The process begins with users recording a short video clip of their face, which the system analyzes using computer vision algorithms to construct a precise, textured 3D replica—termed a "DITTO" avatar—capturing facial landmarks, proportions, and skin tones for realistic rendering. This model supports overlaying virtual eyewear assets, allowing rotation for 180-degree views and simulation of fit, including bridge width and temple length relative to the user's anatomy. Technically, the system integrates for facial mapping and frame recommendation, for photorealistic rendering, and real-time processing for live try-on sessions on desktops or mobiles. It employs in-house developed software to process video input without requiring specialized hardware, producing avatars that users can save and reuse across sessions or retailers. Recorded modes generate persistent models for asynchronous viewing, while live modes enable instant feedback during browsing. The platform's database includes thousands of frame models from brands like and , scaled accurately to match physical dimensions. Accuracy relies on algorithmic estimation of and facial geometry from video, achieving high fidelity that correlates with physical fit in user tests, though limitations exist in dynamic expressions or lighting variations. By , the had facilitated virtual try-ons for over 60 million users annually, integrating with retailer sites to enhance purchase confidence via visualized personalization. Post-acquisition by Fittingbox in , it complements existing patents in AI-driven visualization, expanding to broader digital eyewear ecosystems.

Recommendation and Analytics Features

Ditto's recommendation engine employs advanced facial recognition to analyze user-specific features, including over 900 unique facial landmarks, for generating personalized suggestions tailored to face shape, size, and proportions. This technology processes or uploaded imagery to recommend frames that optimize fit and aesthetic compatibility, reducing common online purchase barriers like uncertainty over suitability. Retailers licensing the system integrate it to deliver style-matched options, often combining algorithmic outputs with optional human stylist input for hybrid personalization. The engine's core relies on proprietary algorithms that correlate metrics with frame databases, prioritizing causal factors such as width alignment and length proportionality over generic trend-based filtering. By capturing and mapping biometric data during sessions, enables dynamic adjustments, such as suggesting alternatives if initial tries reveal mismatches in or cheekbone interference. This approach has been deployed across sites, where it reportedly increases user engagement by facilitating extended exploration—averaging 35 frame try-ons per session versus six in brick-and-mortar settings. Analytics features complement recommendations by aggregating anonymized session data for retailers, including metrics on try-on frequency, conversion correlations, and abandonment patterns tied to fit predictions. Platforms track interactions like frame views, sharing rates, and email captures during virtual sessions to inform inventory prioritization and segmentation. These insights derive from large-scale usage, with over 60 million annual sessions processed by 2021, enabling evidence-based optimizations such as browser-specific performance audits. Post-acquisition integration with Fittingbox has preserved these capabilities while expanding database access for refined predictive modeling.

Business Model and Market Adoption

Revenue Streams and Client Base

Ditto's primary derives from licensing its patented try-on and recommendation to business-to- (B2B) clients in the sector, enabling integration into sites, apps, and in-store kiosks for personalized customer experiences. This model shifted from an initial online retail operation, where Ditto sold glasses via its platform, to emphasizing provision after recognizing the scalability of software licensing for broader adoption. The client base comprises brands, retailers, and eye care professionals seeking to enhance online sales conversion through realistic fitting simulations. Early partnerships included major brands such as and , allowing access to hundreds of styles via Ditto's platform, with collaborations extending to at least 20 brands by 2012. Additional integrations involved optical chains like for both online and kiosk-based applications, as well as technology tie-ups such as with Materialise for advanced in . Post-acquisition by in October 2021, 's technology supported B2B vision care solutions, contributing to over 60 million annual virtual try-ons across client platforms and facilitating expanded offerings like integrated exam and fitting tools. The subsequent sale of 's assets to Fittingbox in October 2023 further embedded the technology within a larger portfolio serving thousands of optical businesses, though specific revenue allocation from remains undisclosed. This licensing approach has positioned as a key enabler for , prioritizing scalable software deployment over proprietary retail.

Integration with E-Commerce Platforms

DITTO's virtual try-on technology integrates with e-commerce platforms primarily through embeddable widgets and APIs that allow retailers to incorporate facial scanning and frame visualization directly into product pages. This enables customers to upload photos or use webcams to generate personalized try-on experiences without leaving the retailer's site. For example, Discount Glasses embedded DITTO's platform in November 2017, permitting shoppers to virtually test via or photo upload, which correlated with a reduction in return rates by providing realistic fit previews. Similarly, SmartBuyGlasses integrated the tool to support virtual try-ons for over 5,000 pairs of and , expanding product variety while maintaining user-friendly online purchasing. The integration process typically involves retailers adding code snippets or iframes supplied by , which handle facial landmark detection and frame rendering on the , with backend processing for recommendations based on captured biometric data. This approach has been adopted by diverse brands, frame manufacturers, and eye care professionals since DITTO's founding in 2011, facilitating seamless compatibility with standard architectures. Post-acquisition by in October 2021 and subsequent transfer to Fittingbox via in October 2023, DITTO's integration capabilities expanded to include enhanced feeds, allowing platforms to track user interactions for inventory optimization and . Retailers report straightforward setup times, often under a week for basic embeds, though custom configurations for advanced features like real-time recommendations require developer involvement.

Patent Infringement Litigation

In February 2013, glasses.com, operating under (a of WellPoint, later ), initiated litigation against Ditto Technologies in the U.S. District Court for the District of (Case No. 2:13-cv-00145). The complaint alleged that Ditto's try-on infringed U.S. No. 8,335,313, covering computerized methods for selecting and virtually fitting eyeglasses based on facial measurements and imaging. had acquired the patent from the defunct Eyeball Networks Inc. in late 2012, shortly after becoming aware of Ditto's competing webcam-based technology launched earlier that year. Ditto contested the claims, asserting non-infringement and challenging the patent's validity as overly abstract and failing to cover its specific approach. The suit drew criticism from groups like the , which argued it exemplified aggressive patent assertion to suppress innovation rather than defend genuine invention, given the timing of the acquisition. countered that the enforcement protected its prior development of similar features on Glasses.com. The litigation imposed significant financial strain on , a startup with around 15 employees at the time, prompting CEO Jennifer Endress to launch an campaign in May 2013 seeking $250,000 for legal defense costs, portraying the action as "patent trolling" by larger competitors. The campaign highlighted risks to Ditto's viability, as defense expenses could exceed millions over years of proceedings. No settlement terms were publicly disclosed, but the case terminated on June 16, 2016, likely via private resolution given the absence of a trial record or public judgment. Compounding the pressure, Lennon Image Technologies LLC—a non-practicing entity focused on licensing—filed a second infringement suit against and 12 other retailers in April 2013 in the U.S. Court for the Eastern of (Case No. 2:13-cv-00236), claiming violation of U.S. Patents Nos. 7,162,070 and 8,229,789 on image capture and processing for product visualization. responded by partnering with IPNav, another licensing firm, to assert counter-invalidity challenges based on , leveraging inter partes review proceedings at the Patent Trial and Appeal Board. This strategy prompted Lennon to dismiss its claims against in October 2013, with formal termination on November 14, 2013; the move was hailed as a rare startup victory against tactics, though it still devalued by an estimated $3-4 million due to distraction and uncertainty. These cases underscored broader concerns over quality in software-enabled , where broad claims on and visualization invited assertions against innovators like , despite no of direct copying. No further infringement litigations involving as defendant have been reported post-2016.

Biometric Data Privacy Issues

DITTO's virtual try-on technology captures users' facial geometry, including measurements such as eye spacing, nose bridge width, and facial contours, to overlay eyewear frames accurately on a or uploaded image feed. This generates biometric identifiers, which are unique physiological characteristics not easily altered, raising risks if stored or shared without safeguards, as cannot be changed like passwords in the event of compromise. In July 2021, a lawsuit was filed in the U.S. District Court for the Central District of alleging that Ditto Technologies, as the provider of Zenni Optical's virtual try-on service, violated the Illinois Biometric Information Privacy Act () by collecting facial scans without obtaining informed written consent, publishing a and destruction policy, or securing for any third-party disclosures. mandates strict procedures for handling biometric , including of collection purposes and timelines for deletion, with violations exposing entities to statutory of up to $5,000 per negligent or intentional infraction. The suit contended that users unknowingly provided scans during try-on sessions, potentially enabling indefinite retention or misuse for non-disclosed analytics. Ditto's , last updated July 1, 2025, asserts that the company does not require or sensitive personal information, including , and limits to business necessities while anonymizing usage statistics for aggregate analysis. Following Ditto's acquisition by Fittingbox, the parent entity has emphasized that virtual try-on sessions images transiently without storing identifiable biometric or linking it to personal identifiers, aiming to comply with regulations like GDPR, which classifies as special category necessitating explicit consent and proportionality assessments. However, critics argue that even ephemeral ing can inadvertently create derivable biometric templates if logs or derivatives persist, amplifying risks in integrations where flows to retailers or analytics providers. Broader concerns include cross-jurisdictional compliance challenges; for instance, EU users' data processed via U.S.-based servers must align with GDPR's data protection impact assessments for high-risk biometrics, potentially conflicting with lighter U.S. state laws outside Illinois. No public data breaches involving Ditto's biometrics have been reported as of October 2025, but analogous virtual try-on cases have prompted exemptions under BIPA's healthcare provision for prescription eyewear fittings, though non-prescription scans like those for sunglasses remain litigatable. These disputes underscore tensions between technological utility and privacy, with empirical evidence from similar platforms showing user hesitation when informed of scan permanence.

Industry Impact and Evaluations

Contributions to Eyewear E-Commerce

DITTO's virtual try-on system, introduced in 2012, represented a breakthrough in by enabling users to generate facial models from videos, allowing realistic visualization of frames on their own features without requiring physical samples. This innovation overcame longstanding barriers to online sales, such as doubts about fit and , permitting retailers to offer expansive digital inventories far exceeding brick-and-mortar limitations. By licensing the technology to multiple platforms, facilitated personalized shopping experiences that integrated frame recommendations based on facial scans and user preferences, thereby streamlining purchase decisions. The platform's adoption grew substantially, reaching over 60 million users annually by 2021, underscoring its influence in scaling virtual fitting as a standard tool for eyewear retailers. Additional features, including measurement via the same facial capture process, further supported seamless online prescription fulfillment, minimizing errors and expediting transactions. These capabilities collectively empowered brands and eye care providers to transition more sales channels digitally, enhancing accessibility and efficiency in the sector.

Criticisms, Limitations, and Competitive Landscape

Critics of virtual try-on technologies, including Ditto's implementation, have highlighted challenges such as difficulties in locating the try-on feature on retailer sites and inconsistencies in rendering frames accurately across devices. These issues can hinder user adoption and lead to , particularly when search functions fail to surface the tool prominently. A key limitation of Ditto's system lies in its reliance on user-facing cameras and lighting conditions, which can result in distorted previews if environmental factors like poor illumination or low-resolution hardware are present, reducing the realism of the 180-degree head-turn simulation. Accuracy for style, fit, and proportion hovers around 80-90%, meaning virtual simulations may not fully capture real-world variables such as frame weight, comfort, or subtle facial contours, potentially contributing to higher return rates despite the tool's intent to minimize them. Additionally, the technology struggles with diverse face shapes or accessories like hair and makeup, which can interfere with precise overlay, limiting its effectiveness for non-ideal user scenarios. In the competitive landscape, operates amid a crowded field of AR-based try-on providers, including FittingBox—which acquired in October 2023 to expand its portfolio of 3D frame digitization and virtual tools—Perfect Corp's YouCam platform, and ModiFace (now under ). Other rivals like Banuba and Orbo offer similar facial mapping and recommendation features, often integrated into sites for brands such as and , pressuring providers to innovate in and analytics to maintain . Post-acquisition, FittingBox's dominance in and global expansion has positioned the combined entity as a leader, though independent competitors continue to challenge through specialized mobile apps and lower integration costs.

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