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This system could issue an alert to send a nurse to change the diaper, which is a significant advance over requiring visual inspection.

Not really, babies need constant monitoring anyway so you will figure out the need fast enough.

Imagine a medical or long-term care setting where one person is monitoring 2 dozen patients.

I think they are aiming at the elderly; most babies dont need their glucose levels monitored constantly...

Ah, but does it flash? Can it been seen in the dark - without waking up baby?

why would you want that? nobody would wake a baby to change a diaper.

If it was a big squishy poop at risk of an overflow blowout I would.

If the nappy can't handle another round of pee or poop then yeah I might consider waking the baby up to avoid them waking up thanks to the pee.

The secret is in changes before naps though :)

You might be underestimating just how deeply children sleep.

My kid gets her diaper changed several times a night and sleeps through it. If she does wake up she cries for a drink of water then immediately goes back to sleep.