Consumers are much savvier about radio frequency identification (RFID) coding than they were a year ago, but awareness of the high-tech tagging system may have peaked for the time being, according to an RFID Buzz Research report. In September, more than two out of every five adults claimed to have heard of RFID, according to the study by BIGresearch and Artafact LLC. Awareness grew dramatically in late 2004 and early 2005, with levels peaking in June. The early gains coincided with news reports about RFID deployment in drug and retail stores, said Linda Stegeman, Artafact Research president.