So first of all, the implant sutra may be what you’re looking for. I have also heard of people putting them in their tragus so they can hear sound when wearing a coil necklace (iirc) like @Vicarious has done. There has also been talk of using them along with external devices to add a “digital sense” that can be whatever you want it to be, such as alerting you of notifications (if you have practiced enough and have enough nerve sensitivity you could theoretically have it read out what app the notification is from, the sender, and the contents in fast Morse code or something idk, or at least just learn different patterns for different things), being a compass, a clock, or whatever you want it to be.
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