Signs of life for wireless wallets in the US

The article seems to suggest that US companies are warming up to the idea, but perhaps they are not sure where to start from.

Wireless wallets come closer to reality:

"U.S. companies have been quiet about mobile commerce since hype about wireless wallets was deflated when the dot.com bubble burst in 2000. Many are still skeptical, but some are warming to the idea again amid U.S. and overseas developments."

"Some analysts question whether this technology, known as near field communications, will catch on as it requires an extra chip in phones and widespread acceptance by advertisers"