Blinkinlove (אהיבהוב) is a line of technoromantic jewlery by zzzen: these accessories come in pairs, and each can blink in a heartbeat rhythm in order to indicate that it can sense that its mate is nearby. The closer the mate is, the faster the blinking. It looks for its mate by performing a wifi or bluetooth scan ()depending on the model).
The Materix model is built on an Adafruit Feather HUZZAH board (with wifi capabilities) with a 4x8 Neopixel Matrix Featherwing. For blinking, it uses a heart-shaped Neopixel animation.
Whenever it perfoms a scan, there’s a blue indication on the right hand side. When the mate is nearby, this indication is limited to a single pixel, but when the mate can’t be found, this becomes a more elaborate “where art thou” animation.