Motion Computing’s new M1400 Tablet PC is reportedly the first tablet computer in the United States to incorporate biometric authentication technology into its design, allowing only the assigned user–a teacher or administrator, for example–to access the machine. The device’s fingerprint sensor reduces the chance of inappropriately exposing student data or allowing student hackers to break into electronic gradebooks. It also eliminates the need for multiple passwords and personal identification numbers, because it only requires a single swipe of a finger. Tablet PCs are touted as one of the classroom’s most promising tools, because they have the capability of melding the functions of a notebook, gradebook, chalkboard, and presentation tool into a single, portable package. Teachers can use the tablet in any location for interaction with students and recording grades. Motion’s M1400 Tablet PC, based on Intel Centrino mobile technology, starts at $1,999, though education pricing is available.