Control shopping cart wheels with your phone (2021)
2 days ago
- #shopping-cart
- #audio-hacking
- #electronics
- Warning to disconnect headphones before playing audio on the site.
- Control shopping cart wheels using phone audio signals.
- Electronic shopping cart wheels respond to 7.8 kHz signals for locking/unlocking.
- Phone speakers can emit parasitic EMF at 7.8 kHz to mimic management remote signals.
- Instructions to play specific sounds through phone speakers near Gatekeeper Systems wheels.