The Mantra MFS 100 Optical Biometric Fingerprint Scanner is an excellent choice for online fingerprint verification. With its light weight and small dimensions, it is perfect for use with Aadhaar. The scanner is compatible with a wide range of devices, making it easy to use. The Mantra MFS 100 Optical Biometric Fingerprint Scanner with OTG Cable is a certified STQC product that is compatible with Windows and Android operating systems. The scanner has a 1 Year Manufacturer Warranty and is able to read fingerprints in both wet and dry conditions.