Openpath readers can support either low frequency (LF) or high frequency (HF) cards. You'll need a LF reader to support LF cards or a HF reader to support HF cards. If you're not sure whether you're currently using LF or HF cards, do the following:
- Hold up a flashlight (a smartphone's flashlight feature works well for this) to the card and look for the copper antenna. A thicker antenna indicates LF, a thinner antenna (typically less than 1mm) indicates HF. Do not stare directly into the light, as we did.
- If you're still unsure, please contact Openpath and provide photos of your cards.