Insecure badges at security show?

So if you lost your badge at the RSA Conference, a new one would cost you $1,895 (the cost of attending the show in the first place). Bruce Schneier says for that kind of money, he would have expected the conference to offer something better than your basic flimsy plastic holder from which the badge could pop out. A commenter on his post on the badges adds:

In the Exhibition Hall, several times I've had to take my badge out of it's holder and hand it over to folks. This once led to a pretty scary moment where my badge was misplaced in the drama of interacting with the vendor while trying to understand their product and fitting my schmooze goodies into my overstuffed backpack.

Martin McKeay writes he is concerned about the data contained on the card:

... Next year I think I'll put mine in the microwave on low for about 10 seconds to see what happens. Any one have a RFID scanner they want to lend me for a day or two? ...

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• RSA