PaperCAD: A System for Interrogating CAD Drawings Using Small Mobile Computing Devices Combined with Interactive Paper

Table 10

Interpretation of labels.

Event	Correct	Incorrect
Correctly interpreted	443
Ink capture failure (H)		4
Did not complete before timeout (U)		4
Did not realize cross-out failure and continued to write label (U)		3
Invalid Label (U)		5
Misinterpreted (S)		42
Total	443	58

H: hardware error; U: user error; S: system error.