3 ms·
Add an accelerometer to the card so it can wait until it's face down to swap the picture. :)
by heleninboodler 4y ago
Add an accelerometer to the card so it can wait until it's face down to swap the picture. :)
- jonahss 4y agoHm, that'd work with the other comment about putting contacts on both sides. The cards themselves are completely passive and unpowered. Base does everything.