Second thoughts and notes: 1) Clearly, bluetooth has its place. But, Bump is for the rest of us who'd rather get things done quickly. Ask a random iPhone user

Second thoughts and notes: 1) Clearly, bluetooth has its place. But, Bump is for the rest of us who'd rather get things done quickly. Ask a random iPhone user how they'd share a file or contact with you using Bluetooth. But Bump is easier to explain and it works fine. The bump is a mere ritual for explanation sake and coordinating accelerometer data and is probably not meant to be phone shattering (And seriously, why did anyone pay $600 for a phone these days?) 2) No, the bumping together seems to be perhaps calculating two similar accelerometer signatures within a certain probability (of course location seems to be their secondary heuristic). 3) I don't see why this should this insecure. They are probably using Diffie-hellman for some pretty badass security measure - http://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange http://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exch... 4) To those who don't think this is not going to make any money on the "business" side, maybe you should tell Sequoia, one of Bump's funders, that.