Now try to get the common consumer to understand that.

Even if there were some sort of compatibility requirement to use the card (which seems unlikely, since that'd be a huge obstacle to overcome), you'd still only have to carry the universal card and one backup. You'd have to carry cash around regardless, though, so I don't see how that's a factor.

Just having a card should definitely not be enough for a support person to let you take over someone's Google account

You use the application on your phone to change the card it draws from. Maybe they'll even offer to associate certain merchants with certain cards. Who knows?

This is completely wrong, unless they also broke into your Wallet account at the same time.

No, it'd go more like this:

1. You have five debit/credit cards in your wallet.
2. You get a Google Wallet card to combine all the cards into one.
3. You now have one card in your wallet and five cards stored somewhere safe.

The idea is that instead of carrying several credit and debit card, you carry one card that charges whatever your currently active GWallet card is.

The harm is that they're not willing to meet halfway. DNT is just going to be ignored if they don't play nice.

Welcome to Valve Time.

Doesn't the answer to such questions usually turn out to be "cost"?

There's a difference between "shouldn't spark" and "will never spark, ever". Especially in environments where there is the possibility of a release of explosive gases.

Bill "The Science Guy" Nye? No no no. It's "Bill Nye The Science Guy"! (Billlll Nyeeee the Scienceee Guyyy.)

Should this even be considered relevant?

+1 "I'm right, you're wrong because I say so"

My G930 headsets (~$150) just broke after 6 months of use. Fsck Logitech.

Lengthy process, rather. I don't even know what a length process would be.