
RFID guard key
One per guard. Every round he logs is stamped with this tag — the same route, but now the record says who walked it.
- ✓Passive 125 kHz tag in a yellow keyring fob: clip it to a belt loop or lanyard, nothing to charge.
- ✓36 × 28 × 6 mm — small enough to carry all shift without noticing.
- ✓The serial is fixed in the chip, so one guard cannot lend his key to a colleague and have it read as his own round.
- ✓Lost or broken? Issue a new key and bind it to the same guard — the checkpoints stay where they are.
| Frequency | 125 kHz |
|---|---|
| Type | Passive, read-only |
| Size | 36 × 28 × 6 mm |
| Housing | Yellow keyring fob |
| Weight | 3.8 g |
| ID | Fixed serial, not rewritable |




