News for hackers. Stuff that matters.

A comment on Twitter Creator Jack Dorsey’s iPhone Payment System.

Re:Twitter Creator Jack Dorsey’s iPhone Payment System by alexyim on Sunday October 18, 2009 @01:59AM (#888045)
Does anyone have the headphone jack specifications at hand? It'd be interesting to see what else could be done.
[ Parent | on HN ]
Re:Twitter Creator Jack Dorsey’s iPhone Payment System by blasdel on Sunday October 18, 2009 @02:55AM (#888099)
It's just taking advantage of the analog audio in and out, and possibly the line-shorting functionality that makes the play/pause button work.
[ Parent | on HN ]