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.
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."