information such as financial accounts medical records passwords personal identification numbers and other sensitive data and information the device has tamper resistant packaging with form factors ranging from credit card size to key fobs a fingerprint scanner u2014 although those familiar in the art will recognize that this can be interchanged with another biometric technology and these are covered in russell 39 s patent application u2014 liquid crystal display lcd and buttons for user interaction a wireless interface for communication with other electronic devices and a self generated public key private key pair for digitally signing data the device has been developed so that the fingerprint cannot be physically or electronically removed or transmitted from the device and information cannot be physically or electronically removed or transmitted from the device unless released by the owner of the authorizing fingerprint all data and processing is performed in secure silicon the bpid can store and run multiple applications allowing an individual to store a variety of personal information although it is important to note that the applications are fully independent and cannot affect other applications 39 data many of these applications require the owner to transmit information to a terminal for example the bpid may wirelessly transmit financial account information to a cash register during an in store purchase in order to make this transaction secure the bpid uses.