Lockitron is a product that allows users to lock and unlock doors using their phone, leveraging the Apigy app and Twilio's SMS feature for added functionality, such as remote access sharing with friends or guests. The company has been working on Lockitron for over a year, aiming to make the user experience seamless, whether installing the product, using it daily, or sharing keys with others. With its Ruby on Rails, jQuery, Perl, and C-based architecture, Lockitron integrates Twilio's API for cost-effective SMS access, expanding its reach beyond smartphone users. The company is focused on improving user engagement through features like notifications and clever messaging, aiming to make the product as user-friendly as possible.