Looking for hand shape based biometric devices interoperability

Identification of people through hand based biometry has been lately researched by different scientific groups due to its simplicity, reliability, and acceptability. In the very early years several works based on different acquisition devices or procedures has been presented. In this paper we focused the proposal on a property of the hand shape biometric devices that has been barely studied: the interoperability. In this paper we present a preliminary study based on a database composed by 1800 hand images acquired with 6 different hand-shape biometric approaches including flat scanner, webcams at different wavelengths, high quality cameras, and contactless devices acquiring the hand by both sides. Our results suggest we are in the way to reach acceptable results of interoperability.