Tesco is planning to roll out scan-as-you-shop technology to stores next year.
The retailer says trials of the hand-held technology have "gone well" and that shoppers will be able to scan goods as they put them in their shopping baskets while walking round stores.
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It says 10 million customers a week now use self-service checkouts and that hand-held IT is the next step.
The company released its interim results today, showing a 12.5% increase in profit before tax compared to the first half of 2009.
The profits were driven by fast growth in Asia, with online sales in Korea alone growing 72%.
Tesco.com overall saw a 16.1% increase in sales to £1.2bn, although it described profits as "stable" at £58m as it absorbed the start-up costs of its online clothing and enterntainment businesses.
It reported a growth in customers of 10% to 1.2million, and said average basket size had increased. The company said it introduced "important innovations" during the first half including an upgraded website, a transactional iPhone application to add to its Tesco Finder app and trials of a "click and collect" service.
Chief executive Terry Leahy said: "In the UK, we have coped very well with subdued demand and modest levels of industry like-for-like growth, helped by excellent productivity, a pleasing performance from new stores and good growth from our Services businesses, particularly online and Tesco Bank. Economic recovery in the UK is slow and steady and I believe our investment in making the shopping trip even better for customers means that Tesco is well-placed to grow in this environment."