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by arfrank 3536 days ago
In all honesty, the juice isn't worth the squeeze. When you put a battery into that form factor battery life is a big issue and keeping in sync with your phone really harms it. Add recharging and you have other tradeoffs, so EMV gets us 95%+ of the way there and we're happy not having to solve really hard esoteric challenges related to things like the Bluetooth stack for BLE use.