UHF RFID inlay was challenge to collected data when quantity over 100pieces, espeicallly they are stacked in high density. This small video show 100 pieces tags (inlay sized in 20x6mm) 100% read out in 2 secs, while 420 tags 100% read our in 4 secs. A self design near field reader panel can fast scan up to 600 pieces tags in scope of 10cm height upon the surface of antenna in seconds. runrfid.com