Keycard

Keycards are used by keycard readers and drones to authenticate players. When held, matching keycard readers within five blocks will output a signal. Additionally, drones that have been assigned a code will not attack players whose last-held keycard matches their code.
Crafting

History
| Version | Changes |
|---|---|
| R1 | • Added keycard |
| R3 | • Keycards are now available in sixteen colors • Tweaked recipe to be slightly simpler |