Heikki Sørum wrote:
When were talking about different ways to use accelerometers..
Bob meet's Alice and they both want each others contact
information. First Bob and Alice shake their phones in an predetermined
password pattern to unlock the
bluetooth/zigbe/(whatever-short-range-radio).
Then they both shake their phones in rythm to an short tune
playing on Alice's phone. The phones then pair with the
other phone, exchange simple authkeys and Vcards.
Now Bob and Alice has authenticated each others phones and they got
each others phone number. Lucky Bob and Alice!
On an more serious note, Two such paired bluetooth devices could also
exchange an RSA/DSA encryption key to ensure private
SMS/MMS/conversations.
If Bob (or Alice) hands his (or her) phone to the other, then if both
phones are shaken in the same hand, the acceleration pattern might
provide an extremely unique yet similar signature, not unlike exchanging
an encryption key.
So if you want to establish a trusted relationship with another Neo
user, the two phones are shaken together until the software indicates
that you have generated a complex enough pattern that has been
recognized on the other.
Once this has been established, they can exchange one of the standard
encryption keys.
All without pressing a single key, and without danger of exposing
anything to other Neo or bluetooth devices within range.
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