ZitherFingers (aka John J. Synder) submitted this video of a performance of Karas' Third Man Theme. John wrote, "I shot the video with my iPhone® using it's built-in mic; my StringMic® is connected to a small guitar amp for a little sound reinforcement." Try the video in full-screen mode.
The StringMic that John developed can be a nice addition to a performer's kit. The StringMic retains a nice Zither sound, and is usable with type of string, even with nylon core strings such as the Lenzner Soloklang. (John tells me the unit works by detecting changes in capacitance, unlike those detectors that respond to changes in inductance and require the use of metal core strings.) The detector is a thin wooden paddle with felt on the underside to protect the finish of the instrument. One simply slips the paddle under the strings as can be seen in the video. A small box attached to one end of the paddle contains all the amplification electronics as well as jacks for the cord from the instrument and power. John plans to start manufacturing and taking orders for StringMics sometime in Fall 2011.