More convenient than a traditional combination lock, the Tapplock One Smart Padlock is also more secure. Using a capacitive sensor, it unlocks in under a second using your unique fingerprint. It can store up to 500 different prints for cases where multiple people need access, can also unlock via an app over Bluetooth, and has a Morse code-style fallback. The Zamak 3 zinc alloy body and cut-resistant stainless steel shackle are both water and weather resistant, and the battery lasts up to a year on a single two-hour charge. Available in silver, gunmetal, and black.