All read ranges are affected by the environment the reader and card are subjected too. The following data was obtained in a relatively "noisy" RF area with the reader mounted on a metal backplate. These are the MINIMUM distances measured.
| MT11 | XF1100 | ||
| XID Prox II (7510) | 1.75 | 3 | minimum read range distance in inches |
| HID Prox (1386) | 2.125 | 3.625 | minimum read range distance in inches |
| GE Prox | 3 | 4.125 | minimum read range distance in inches |
| EV1 (8520) | 1.125 | None | minimum read range distance in inches |
| ICLASS (CSN only) | 3.625 | 2.875 | minimum read range distance in inches |
| XID MIFARE (9520) | 1.75 | 2.25 | minimum read range distance in inches |
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