E-Pin Optical's USB memory drive with FingerPrint Protection FAQ - Frequently Asked Questions - Question and Answer - Q5: During the dry weather or winter time, will static cause malfunction? A5: E-Pin's Optical FingerPrint USB drive is STATIC-FREE. The very best unique point about the product design with optical lenses and prism is that: it will not cause any malfunction due to static causing by touching clothes or dry weather. This is one of the features the user benefits from E-Pin's Optical FingerPrint USB drive, and will never find this great advantage in other types of fingerprint USB drive such as IC chip fingerprint USB drive. This static-free Optical FingerPrint allows users free from worries about careless or suddent static which might happen without noticing.