I attended a retail EDI/B2B seminar recently and the consultant mentioned RFID checkout trials to get rid of queues/lines at the checkout by using RFID tags on all items. You load your trolley in the store and walk past a scanner and are presented with a bill for everything in the trolley. It's a nice idea; no unloading and re- loading the trolley at the checkout.
Unfortunately (for the supermarkets) the trials demonstrated that if you line your (metal) trolley with cheap canned goods and other cheap metal goods like baking trays, you don't get charged for the caviar and champagne that you've carefully placed in the middle of the trolley. If the signal can't reach the checkout desk, I don't they're going to be read by satellite (yet). Ian. --- In [email protected], Mike Rawlins <[EMAIL PROTECTED]> wrote: <various bits snipped...> > For instance, low-frequency tags use > less power and are better able to penetrate non-metallic substances. They > are ideal for scanning objects with high-water content, such as fruit, but > their read range is limited to less than a foot (0.33 meter). > High-frequency tags work better on objects made of metal and can work > around goods with high water content. They have a maximum read range of > about three feet (1 meter). UHF frequencies typically offer better range > and can transfer data faster than low- and high-frequencies. But they use > more power and are less likely to pass through materials. And because they > tend to be more "directed," they require a clear path between the tag and > reader. UHF tags might be better for scanning boxes of goods as they pass > through a dock door into a warehouse. . Please use the following Message Identifiers as your subject prefix: <SALES>, <JOBS>, <LIST>, <TECH>, <MISC>, <EVENT>, <OFF-TOPIC> Access the list online at: http://groups.yahoo.com/group/EDI-L Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/EDI-L/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
