Touch Bionics, a UK-based prothesis developer, announced today that its i-LIMB bionic hand has been made available for use in the United States and Europe. The i-LIMB is one the first widely available prosthetic hands with five individually powered digits, affording its user a surprisingly wide range of motion. Additionally, the i-LIMB uses dynamic touch detection which can sense when a finger has sufficient grip on on object and stop powering, useful in situations such as holding someone's hand, where too much power can cause, er, problems. Using electric signals generated by working muscles to control the hand, the device is much like traditional myoelectric prosthetics (the signals are sent from electrodes placed on the skin). Touch Bionics has also developed a "groundbreaking" form of cosmesis, a latex sheath which covers the hand that TB claims gives an incredibly realistic appearance. Check the gallery to see for yourself.