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Will smartphones change shopping?

Many people are familiar with buying goods online, but now technology can also play a part when shopping on the High Street.

Many people are familiar with buying goods online, but now technology can also play a part when shopping on the High Street.

Some companies want to use new technology to drive sales in their stores, by sending special offers to phones and making it easier to buy products on show in window displays.

Rory Cellan-Jones reports.