The EyeLock process is both simple and secure. First, the device takes high resolution pictures of the user. Then, the EyeLock algorithm detects the pattern of the colored portion of the iris images to extract specific markers, also known as "template". The user's template is then compared to an existing database of templates looking for an identity match. Once a match is found, the device communicates the identity of the user to the Access Control System. The entire process takes a fraction of a second.

Unlike many other biometric and card-based control solutions, nano EXT™ identifies people in real time and at a distance, in indoor and outdoor locations. nano EXT™ allows processing people through doors or checkpoints at a rate of up to 20 people per minute without delays or backups. The device is designed to operate in direct sunlight, snow or rain and temperatures between -40°C to 66°C (-40°F to 150.8°F). The device's sleek and unobtrusive design is also vandal-resistant. nano EXT™ features automatic height adjustment to allow simple interaction regardless of the user height. With no cards, fobs or keys to replace or upgrade, and no risk of loss or theft, iris technology makes credential management incredibly easy and cost-effective.