Wiktionary
n. An extension of the fingerprint system which records and matches images of the entire palm
Wikipedia
A palm print refers to an image acquired of the palm region of the hand. It can be either an online image (i.e. taken by a scanner or CCD) or offline image where the image is taken with ink and paper.
The palm itself consists of principal lines, wrinkles (secondary lines), and epidermal ridges. It differs to a fingerprint in that it also contains other information such as texture, indents and marks which can be used when comparing one palm to another.
Palm prints can be used for criminal, forensic, or commercial applications. Palm prints, typically from the butt of the palm, are often found at crime scenes as the result of the offender's gloves slipping during the commission of the crime, and thus exposing part of the unprotected hand.
Usage examples of "palm print".
Someone made an effort to wipe the car clean, but the techs picked up a few latent fingerprints, including a partial palm print on the jack.
I opened the door with my palm print and stepped aside to let her enter.
Whack, right on the meaty bicep she slapped him, leaving a white palm print on the sunburned freckled flesh below the sleeve of the guy's torn blue T-shirt.
He had it locked under his private pass, his voice pattern, his palm print.
Her gaze traveled to the white palm print on the rumpled gray wool.
At its far end, a brushed-bronze elevator door opened at the touch of Beridien's palm print.
Then they knelt and each left a palm print of the mingled blood on the hearthstone.
The inner door is computerized and encoded and appears to take a numeric code and a palm print.
On the wall was a palm print sensor, its opaque surface in sharp contrast to the stark white walls.