What is the difference between a .sig format signature and a Bitmap ?
Topaz .sig-format data is vector file containing the original signature data from the tablet at high speed. The signature data is captured directly and is not passed through a driver layer. This means that the .sig data represents the entire signature and the exact sequence of all of the points, loops, strokes, and timing data. A standard .sig file will typically take 5K bytes. A .sig-format data file consists of the full-tablet high-resolution signature. It can be compressed using the CompressionMode property to under 500 bytes. An image or bitmap file on the other hand does not store a signature in a vector stroke format, but in an X-Y matrix of points. It is typically much larger than a .sig file, and it contains none of the biometric or forensic information such as the sequence and timing of the loops, strokes, and segments.
