I thought this has been done to capture keystrokes of a keyboard next to the phone already 2011 https://www.researchgate.net/publication/221609349_spiPhone_Dec

I thought this has been done to capture keystrokes of a keyboard next to the phone already 2011 https://www.researchgate.net/publication/221609349_spiPhone_Decoding_vibrations_from_nearby_keyboards_using_mobile_phone_accelerometers https://www.researchgate.net/publication/221609349_spiPhone_...