Source: Hacker News
Article note: Nifty, someone RE'd the Shimano Di2 protocol. Pretty sane 2.479GHz GFSK scheme. It's susceptible to replay attacks and selective jamming. (1) I hope someone writes an NRF24 firmware or something to make compatible dingi, and (2) I bet this will lead to some srs bsns racing shenanigans, or at least accusations thereof.
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