You searched for "interlinking"
INTERLINK
INTERLINK VP9801 WIRED SIGNATURE PAD VP9801
Part: VP9801
Wired signature pad for capturing customer signatures at retail and payment points.
INTERLINK
INTERLINK ELECTRONICS EPAD-INK VP9840 - TOUCHPAD - USB VP9840
Part: VP9840
3.8 inch USB touchpad for capturing signatures and input at retail.