Disposable version of ChampionChip?

Ran a 5K race today. Came through in 20:39. Splits was 6:43, 6:50 (1.1mile - 6:12 pace), and 7:04. Just over two minutes slower than my PR back in April. Got some work to do ahead of me.

One interesting aspect was this electronic tag that they gave us. We had to tie it to our shoe and it would register the time as we crossed the finish line. This is what it looks like from the front:



and the back:


Pretty neat stuff. Small, unobtrusive, and disposable. No more worrying about losing your tag and having to shell out 20 or 30 bucks.

I was able to make out "UPM Raflatac" on the back. A web search took me to this company that makes RFID devices: http://www.upmraflatac.com/northamerica/eng/. Wonder how this will affect the usage of ChampionChip tags? On one hand, the ChampionChip tags cost money, but on the other hand, they are environment-friendly in that that they can be used multiple times.