Turn your Apple iPhone or Android handset into a cartridge based video game player
So Beatrobo has developed a game cartridge called the Pico Cassette. These puppies click into place using the 3.5mm earphone jack on an iPhone or Android handset. The cartridges don't store software. Instead, they act as an authentication key that works in conjunction with apps loaded on your phone, by using an inaudible sound. The Pico Cassettes communicate with Beatrobo's servers. Each cassette has a unique identifier that allows games to be stored in Beatrobo's servers. This way, you can start a game, switch devices, and not miss a beat.
The company is counting on game players feeling a sense of ownership with the physical cassettes. That is something that they might not have when storing a game in the cloud. At the Tokyo Game Show, where the system was displayed, the only game available was a Flappy Bird-like title. Obviously, licensing a number of games will be a major priority for the company.
The cassettes are expected to sell for $15 each once the system launches. When that will be, no one has a clue right now.
source: PicoCassette (translated) via TheVerge, MobileSyrup