10. An information handing device, comprising: a touch surface; a display screen operatively coupled to the touch surface; a processor operatively coupled to the touch surface and display screen; memory device that stores instructions executable by the processor to; detect, at the touch surface, at least two points of contact of a hand of a user; identify, based on a configuration of the at least two points of contact, a contact signature, wherein the contact signature identities an input provided by the user as handwriting input and is used to identify the user providing the input, wherein to identify comprises identifying a contact position and size associated with each of the at least two points of contact and identifying a distance between each of the at least two points of contact; and display, on the display screen, the handwriting input, wherein the handwriting input is identified as being input at a location relative to the at least two points of contact of the hand of the user.
10. An information handing device, comprising: a touch surface; a display screen operatively coupled to the touch surface; a processor operatively coupled to the touch surface and display screen; memory device that stores instructions executable by the processor to; detect, at the touch surface, at least two points of contact of a hand of a user; identify, based on a configuration of the at least two points of contact, a contact signature, wherein the contact signature identities an input provided by the user as handwriting input and is used to identify the user providing the input, wherein to identify comprises identifying a contact position and size associated with each of the at least two points of contact and identifying a distance between each of the at least two points of contact; and display, on the display screen, the handwriting input, wherein the handwriting input is identified as being input at a location relative to the at least two points of contact of the hand of the user. 12. The information handling device of claim 10 , wherein the instructions are further executable by the processor to display, on the touch surface, a graphic depicting a writing utensil at the location of handwriting input.