Snap has unveiled significant upgrades to its Spectacles AR glasses, enhancing their capabilities with GPS and hand-tracking features. Developers can now create Lenses that utilize geo-location data to design location-based AR experiences, such as walking courses and navigation aids. Notable examples include NavigatAR, which guides users with visual cues. The company aims to broaden access to AR, offering discounts for educators and students. Additionally, Snap has launched a series of challenges for developers to win cash prizes by creating innovative Lenses, starting April 1.