Monday, October 19, 2009

Add external devices to your iPhone using just the audio jack

Eddie on the newtech-1 mailing list posted this article

"CNET: "Twitter co-founder's 'Square' comes into focus"Looks like a neat iPhone attachment that turns your phone into a portable credit card reader."

To which my reply was;
Hmmm “that fits in to the headphone jack of an iPhone” Oh really?
I wonder how they are achieving that?

Calvin was able to provide this link;

So technically I could build a keyboard for the iphone using it’s ‘audio jack’ or any other type of external device as long as it didn’t need anything more than a 1200 baud data rate.

Very interesting, wonder if anyone else is planning things along this line.


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