Vaultek has released a unique product called the Biometric Smart Key Nano Touch. This gives you instant access to your safe with one simple touch of a button. It will open the safe using your fingerprint. It can be mounted anywhere such as under a desk, in a vehicle, or hidden next to a door. The biometric scanner can hold up to 20 fingerprints and has a range of up to 20 feet.The Vaultek VSK-NT Biometric Smart Key Nano has a built-in rechargeable battery that provides 3 months of standby time. It can easily be recharged in 2.5 hours with the provided Micro-USB Charging Cable. It is small enough that it wont be easily noticed if someone is looking for it and has dimensions of 1.8 diameter by .8 tall.The Vaultek VSK-NT Biometric Smart Key Nano is compatible with the RS Series, MX Series, VT Series, and Slider Series models.Features:Instant access with one simple touch.Mount anywhere with the included bracket and mounting tape.A biometric scanner can store up to 20 fingerprints for secure access and features a range of up to 20 feet.The built-in rechargeable battery provides 3 months of standby time and can be recharged in 2.5 hours.Compatible with RS Series, MX Series, VT Series, and Slider Series Safes. NOT COMPATIBLE WITH ESSENTIAL SERIES MODELS.Included Accessories:(1) Micro-USB Charging CableSpecifications:Outside Dimensions: 1.8 Diameter, .8 Tall.