It doesn't need to be a sex toy, obviously. $5 worth of parts from Ali Baba could be assembled into a signaling tool: https://www.alibaba.com/product-detail/Ty

It doesn't need to be a sex toy, obviously. $5 worth of parts from Ali Baba could be assembled into a signaling tool: https://www.alibaba.com/product-detail/Type-C-Bluetooth-5-0-Audio_1600835214388.html https://www.alibaba.com/product-detail/Type-C-Bluetooth-5-0-... There's even prebuilt solutions for things like poker: https://www.cardslenses.com/remote-contorl-poker-game-vibrator.shtml https://www.cardslenses.com/remote-contorl-poker-game-vibrat... https://elie.net/blog/security/royal-flush-an-in-depth-look-at-poker-cheating-devices-accessories/ https://elie.net/blog/security/royal-flush-an-in-depth-look-...