Abus Lock Chain Combo Yardo 7807F/110 BK Chain Lock – Black. Unlock your bike in seconds with the Abus Yardo fingerprint chain lock featuring cutting-edge capacitive sensor technology. The 7mm round chain available in 85 cm or 110 cm lengths provides strong anti-theft protection while the coated zinc die-cast lock body is equipped with a fingerprint sensor that stores up to 20 fingerprints for easy sharing. The lock opens instantly when a registered fingerprint is placed on the sensor and automatically locks when the chain ends are inserted. Designed with a silicone cover to protect your bike from scratches the YARDO is both dustproof and weatherproof (IP66/IP68 certified) and includes a double ball bearing lock for extra security. A CR2 battery is included.