Wallet PCs will be priced about the way cameras are today. Simple, single-purpose “smart cards” for digital currency will cost about what a disposable camera does now, whereas, like an elaborate camera, a really sophisticated wallet PC might cost $1,000 or more, but it will outperform the most exotic computer of just a decade ago. Smart cards, the most basic form of the wallet PC look just like credit cards and are popular now in Europe. Their microprocessors are embedded within the plastic. The smart card of the future will identify its owner and store digital money, tickets, and medical information. It won’t have a screen, audio capabilities, or any of the more elaborate options of the more expensive wallet PCs.