Shockwatch have come a long way since I dealt with them in the '80s -- they
now have detectors for shock, tilt, altitude, heat, warmth, cold, humidity
-- check 'em out.

Their original product, Shockwatch, is extremely clever -- a flat paper
label with a small white glass tube embedded in the middle.  When
accelerated over the setpoint (they had two levels back then, five now) a
drop of red dye would spread through the tube turning it permanently red.

We had graphic evidence of how pleasing this was to shipping companies -- a
number of boxes came through with the tube smashed by slashing through it
with a ball-point pen.  Of course this was presumptive evidence that the
label had tripped, and the label *inside* the box would tell its own tale.

http://shockwatch.com/products/?auid=1005930385685

David Beierl - dbeierl@attglobal.net