Once the computer triggers the mechanism, the inflation valve is opened electrically, releasing gas from a CO2 cartridge into the airbags, which are then fully inflated within 0.2 seconds. When it hits the ground, it bounces around gently for a moment, then rests unharmed on the airbags. The airbags remain inflated at this point, however, it is unclear if they can be deflated and repacked, or if each smartphone rescue would require replacement airbags.
via Gizmag
