No More Missed or Cross-Read Tags in Dense, Overlapping Batches: The ILT51 Series 3M3 High-Power Reader

In large-volume tag management scenarios such as card decks, laboratory samples, batch inventory of archives, books, and exam papers, tags are often stored densely, overlapping each other or even pressed together with zero spacing. Traditional ISO 15693 readers suffer from slow speed, high miss-read rates, and multi-tag collisions, and "cross-reading" easily occurs between adjacent tags or antennas, resulting in unreliable data and repeated verification.

Guangzhou Andea Electronics Technology Co., Ltd. has launched the ILT51 series high-power reader. Built on the ISO/IEC 18000-3 Mode 3 (3M3) protocol, it solves the challenge of identifying dense batches of tags at the protocol level. Compared with ISO 15693. it is stronger in rate and anti-collision mechanisms, making it more suitable for high-density, overlapping, and zero-spacing scenarios and delivering "fast, accurate, and stable" performance. Its high-speed anti-collision algorithm makes batch identification faster, precise anti-cross-reading keeps the identification area clear, and stable identification under complex environments and overlapping tags makes data trustworthy and reliable.

In terms of anti-cross-reading, the ILT51 series reader uses 3M3 protocol-layer anti-collision to suppress false responses from adjacent tags, so that tags respond only when scheduled. Combined with antenna field shaping and impedance/standing-wave tuning, it converges the field boundary so that tags outside the sensing area do not respond. Multi-antenna zone scheduling then enables time-division or channel-division identification by area, so that multiple antennas deployed side by side at close range still read only their own zones. Identification-zone boundary control further achieves item-level precision and prevents misreading of adjacent or external tags.

In terms of reading everything, the ILT51 series reader's high-speed anti-collision algorithm enables tags to be identified one by one in an orderly and rapid manner, so that overlapping and zero-spacing tags can also be read completely. With the inventory buffer mode, it can cache up to 3.000 UIDs in a single pass; even when the batch of tags approaches or exceeds the buffer capacity, it can read in batches without loss or omission, eliminating the need for manual secondary verification.

In terms of speed, the ILT51 series reader achieves a read rate of up to 100 tags per 400 ms (about 250 tags per second). A one-time inventory of 10.000 dense tags theoretically takes only about 40 seconds. It is equipped with multiple communication interfaces including RS232. RS485. Ethernet, and USB, and can be seamlessly integrated into existing business systems. Actual tests show that it can stably read dense/overlapping tags in batches, reducing missed reads and rework verification, and is suitable for scenarios such as same-position labeling with overlapping or zero-spacing tags, whole-tray stacking, and tightly pressed stacks.

The product has been deployed and verified in multiple scenarios, including card management, batch book inventory, archive management, and laboratory sample management. The ILT51 series reader is compatible with 3M3 (ISO 18000-3 Mode 3) and ISO 14443A protocol tags. The device features protection mechanisms, standing-wave detection, adjustable sensitivity, and flexible operating modes, facilitating long-term stable operation in complex environments