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About – Universal Marksmanship System
The problem
All scoped firearms require precise calibration to align the barrel and optic to the same point—a process known as boresighting. Mainstream boresighters, including collimators and lasers, have seen little innovation since the mid-1990s. These manual tools are designed to get your first round on paper but require ideal lighting, a known distance, and a gun rest. If a scope is bumped or compromised, recalibration can take up to an hour.Manual methods lack the ability to collect, store, or verify calibration data—making it impossible to recall zero later. Worse, many boresighters are misaligned—left, right, high, or low—leading to time-consuming corrections and wasted ammunition.
The solution
Zero Verify is a patented digital boresighting and zero verification system that combines a smartphone application with sensors along the line-of-sight and line-of-bore. The smartphone becomes a smart boresighting tool. It knows if the optic is tilted, shaken, or off-center. It tracks what your scope sees and how your reticle moves. Then it tells you — clearly and precisely — how to adjust your reticle so that it lines up with your barrel.The system supports a mounting kit compatible with most firearm and optic combinations — military, sporting, and tactical. Users create profiles in the app for custom gun to scope and ammo combinations. ZV then helps establish an initial boresight reference, saves the reticle position after live-fire confirms your zero, and recalls that position later with an on-screen guidance marker. You make the adjustment by turning the optic’s turrets.
Research and Development
Zero Verify is the first patented digital boresighting device to leverage a graphic display and to record and recall zero for verification.
Zero Verify Inc. was started in October 2026. Founder and CEO Selso Tello’s pioneering work has resulted in a highly disruptive system — evaluated through simulation, early controlled prototype testing, and extensive patent development. He has conducted R&D in rifle marksmanship since 2010 and was awarded seven patents on smartphone rifle calibration. Selso continues to lead R&D, bringing engineers, database architects, and developers into the fold to bring his vision to light.
The following depictions of the app and sensors represent front-end functionality and marketing demonstration. They do not reflect the final product.
Patent Portfolio Listing
Patent # 2013044461 (2013) Universal Firearm Marksmanship System Patent # 9,335,125 (2016) Universal Firearm Marksmanship System Patent # 10,145,653 (2018) Universal Firearm Marksmanship System Patent # 10,739,109 (2020) Firearm Marksmanship System with Chamber Insert Patent # 10,900,749 (2021) Universal Firearm Marksmanship System Patent # 11002512 (2021) Firearm Marksmanship System with Chamber Insert Patent # 11506468 (2022) Universal Firearm Marksmanship System
Licensing Opportunities
Selso Tello is offering licensing opportunities to industry leaders and manufacturers interested in developing their own digital boresighters and zero verification systems. ZV’s patent-protected claims unlock scalable innovation built for the future of marksmanship.
The ability to record and recall zero allows rapid optical adjustments without unnecessary live-fire testing—saving time, conserving ammunition, and ensuring optimal performance across conditions.
ZV PRO – App Functionality
Four App Functions
1. Boresight
ZV establishes an initial alignment point — an onscreen guidance marker — indicates where the optic and bore are visually aligned. The camera streams the sight picture to the smartphone app, and the user adjusts the elevation and windage turrets on the scope until the reticle intersects with the guidance marker.
2. Record Zero
Once the shooter has physically zeroed the firearm at the range by using live fire the point-of-aim and point-of-impact intersect in the sight picture. The app then captures and stores the reticle position for future recall.
3. Verify Zero
Users can recall their saved zero and adjust turrets back to the onscreen guidance marker. This feature enables verification anytime the sighting system has been compromised or when operating in a new environment. Verification allows rapid optical adjustments without unneccessary live-fire testing—saving time, conserving ammunition, and ensuring optimal performance across conditions.
4. Predictive Zeroing
This advanced layer builds upon your boresight and zero by calculating and applying corrections based on changing environmental variables. ZV analyzes historical alignment data and ballistic models, incorporates updated environmental inputs, and runs calculations through an AI/ML predictive engine to generate a corrected aim point—ready for user adjustment.
Data – Data Lake and Predictive Zeroing
Zero—or final weapon calibration—
encompasses all variables and constants that influence a projectile’s flight. Constants include shooter expertise and the equipment manufactured tolerances. Variables present during zeroing may include weather, temperature, location, and weapon performance. This data can now be collected and stored in the cloud, much like water accumulating behind a dam—steadily building volume over time. From this reservoir, information critical to marksmanship, marketing, and research can be extracted, analyzed for trends, patterns, and correlations, and processed through AI-driven engines to deliver actionable insights. The result: enhanced precision, improved readiness, and a smarter path to operational superiority.ZV LITE
Zero Verify Lite is ZV’s minimum viable product (MVP)
The smartphone acts as a digital collimator mounted to the muzzle end of the barrel rather than the scope. It enables users to boresight, record, and recall zero settings—just like the more advanced ZV PRO—but without AI or machine learning for predictive zeroing.
Setup includes:
The ZV App with a digital grid and a smartphone barrel-mounting system. ZV Lite relies on the phone’s internal sensors to detect line-of-sight and line-of-bore, with additional user input required for calibration.
R&D — Technology Validation
SolidWorks 3D Virtual Simulation
Johnathan Boyer of Aztec Engineering developed a 3D simulation and virtual prototype of ZV PRO and ZV LITE using SolidWorks—a powerful modeling platform capable of virtually prototyping any physical system. He successfully modeled a riflescope at a 25-yard range, simulated precise adjustments using trigonometric calculations without live fire, replicated a scope bump and corrected it via proximity sensing, and created a digital twin that linked the coordinate systems of the rifle and scope to the smartphone using a pixel grid within the app.
Physical Testing
Testing replicated real-world target practice conditions using a simulated smartphone application. A physical smartphone served as a stand-in for various sensors and digital devices, collecting live data instantly and feeding it into the app. In the final product, the smartphone will perform all necessary computational functions and generate outputs for sighting in the rifle at the desired range. During testing, the phone provided the required sensor inputs for boresighting, while calculations were executed on a separate laptop.
Observed Outcomes
Scope adjustments made during testing matched predicted shot deviations from the simulation, validating the underlying computations. Testing confirmed Zero Verify’s ability to predict mean point-of-impact and support repeatable sight adjustments under controlled conditions.
IP — Extensive Patent Protections
Zero Verify’s patent portfolio secures a broad range of use cases, with additional protections underway. Coverage includes but is not limited to:
- Multiple setup configurations using smartphones or digital display devices for boresighting—including scope-to-phone and bore-to-phone mounting
- Software for simulating bore alignment and sight offset
- Chamber inserts with proximity sensing, infrared, and sensor integration along the line-of-bore
- Environmental offset engine calculating sight adjustments based on elevation, weather, ballistics, and shooter error
- Reticle positioning verification, AR overlays, and AR modules for training and simulation
Licensing – Zero Verify: A Licensing Opportunity in Precision Firearm Technology
Technical Differentiation
Zero Verify aligns with key market trends and sits at the intersection of sensor fusion, smart optics, and adaptive fire control. Zero Verify is a patented, sensor-driven system that transforms how shooters boresight, record, and verify zero, and predict zero shifts — functions that remain fragmented or absent in current boresighting tools and smart optic systems. By triangulating the line-of-sight and line-of-bore, Zero Verify delivers precise point-of-aim alignment across a wide range of firearm and scope combinations, without requiring investment in new optics or firearms.
All boresighters reference the chamber. Zero Verify marks the projectile’s actual departure point with a sensor—enabling accurate line-of-bore detection and scope height measurement without manual estimation. Even as optics become more sophisticated, no scope physically references the firearm’s line-of-bore to determine sight adjustment. Zero Verify fills that gap—offering a defensible, licensable enhancement to both legacy and next-gen platforms.
Market-Aligned Innovation
The riflescope market is evolving rapidly:
- Electro-optic scopes held 59.8% market share in 2019, with steady growth projected through 2027
- Defense modernization is accelerating across U.S., NATO, and APAC regions
- Scope fragmentation continues, with telescopic, reflex, thermal, and laser systems all gaining traction
Zero Verify is built to capitalize on this evolution:
- Scope-agnostic architecture supports integration with all major sight types
- Sensor triangulation delivers precision where traditional boresighters can be less reliable
- No dependency on proprietary optics — users retain their preferred platforms while gaining adaptive zeroing intelligence
Strategic Licensing Opportunities
Sector Licensing Opportunity
- Smart Optics Manufacturers Embedding sensor triangulation for adaptive reticle alignment
- Defense Contractors & R&D Units Enhancing fire-control systems with real-time zero verification
- OEM Firearm & Accessory Firms
Integrating bore-axis sensors for plug-and-play sight-in - Ballistic Engine Developers
Leveraging sensor data for predictive targeting and diagnostics - AR/VR Simulation Platforms Validating zero data for immersive training environments
- Law Enforcement & Tactical Trainers
Standardizing zero across diverse weapon platforms - AI/ML Integrators
Building adaptive zeroing and decision-support systems - Commercial Firms
Offering precision calibration tools for civilian marksmen
Contact Selso
Meet the Founder: LTC Selso Tello, Retired Field Artillery Officer
Selso Tello brings over 34 years of military experience, including command of cannon battery and battalion units and leadership of an Embedded Infantry Brigade Team supporting the Afghan Army’s 201st Corps. His Army and National Guard career spans artillery, training, leadership, management, military counseling, and business intelligence.Selso holds master’s degrees in Human Relations, Business Intelligence and Managerial Analytics (MBA), and Project Management. He is pursuing a master’s in Political Science and Government at Saint Louis University–Madrid.
As the founder of Zero Verify, Selso combines military experience, analytical expertise, and creative problem-solving to guide the company’s research and product development.
For licensing, partnership, or investment opportunities, contact Selso at (770) 362-0730 or selso.tello@gmail.com.