%0 Electronic Chapter %A Peter Z. Lo %+ MorphoTrak LLC %A Michael Rathwell %+ MorphoTrak LLC %T Mobile biometric device design: history and challenges %K mobile computing devices %K biometric sensors %K mobile biometric device design %B Mobile Biometrics %D 2017 %I Institution of Engineering and Technology %P 7-65 %R doi:10.1049/PBSE003E_ch2 %S Security %U https://digital-library.theiet.org/;jsessionid=vhd9j8205bx2.x-iet-live-01content/books/10.1049/pbse003e_ch2