An electronic signature capture system and process meets the legal requirements of a valid electronic signature while also providing electronically signed documents that have the appearance, and thus equivalent acceptability, of a traditional pen-and-ink signature. A preferred embodiment comprises forming scrub lines on one side of the wafer and filling the scrub lines with a temporary fill material. The subsystem includes a first antenna subsystem coupled to the first radio communication unit and a fourth antenna operable in a second frequency band, and a second antenna subsystem coupled to the second radio communication unit and the fourth antenna.