[Fot] Lap timing devices

[Scott Janzen]

I'm looking for a cheap, easy way to get some lap times - excluding a
stopwatch, as that requires someone trackside to use it.

All the name brands seem to cost several hundred bucks - too much for my
purposes.

Anyone have any experience with the cheap infrared ones that are $60 or less,
like Bestlap on Ebay?

Alternately, how about Harry's lap timer for the iPhone?