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This is Scientific American's 60-Second Tech, I'm Larry Greenemeier. Got a minute?

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Our interactions increasingly happen online.

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So it makes sense, in theory anyway, to have some sort of digital certificate on our computers and smartphones we can use for purchases or to provide proof of identity.

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So-called "digital wallets" to replace the ones we physically carry around have been available for years, and are especially useful when shopping online.

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No need to fill out addresses or payment information because this data is already encrypted (hopefully, anyway) and stored electronically.

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But digital wallets have a major problem--hardly anybody's using them.

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In fact, many people don't even know what a digital wallet is, according to the research firm comScore.

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They recently reported that although most people have heard of PayPal, similar digital wallets offered by Google, MasterCard, Visa and others are relatively unknown.

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Of course, ATMs were little used when they appeared in the 1970s and 80s.

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Now you can hardly walk a block without running into one.

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So savor your wallet's leather smell while it lasts.

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It might soon be consigned to a dresser drawer next to that stack of old bank deposit slips.

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Thanks for the minute, for Scientific American's 60-Second Tech. I'm Larry Greenemeier.

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