More about musical diaper alarms

After hearing about these in the early 1990s (they probably went back to the 1960s or 1970s), I finally saw a musical diaper alarm in operation at an AB party. Seems somebody changed the birthday boy's diaper and slipped the diaper alarm in without his noticing, then next time he wet, little electronic music started to play, and he was very embarrassed, and everybody giggled.

And after that, I haven't seen one or seen anybody selling one for about 15 years. Occasionally I've seen somebody post a derisive article about how they're available in Japan or China, saying something like, "Oh that's a good idea, putting electricity in a baby's diaper," or, "Some lazy parents will do anything to avoid checking their babies' diapers." (Hello? This is probably a 1.5 volt DC cell at maximum, the kind that people put in their hearing aids, and what if it's a daycare center that has 30 babies in diapers?)

Well, a recent study has showed that using a musical diaper alarm can significantly help children with potty training. So there. Now if only I could find one to buy for myself ...