I have been working on a project where I have to read data from an NFC tag and store the information locally.
Currently I have a range for the NFC tag of about 5 cm. The tags will be present inside a case with a glass lid on one side which is where the NFC tag will be facing out. Without the glass lid I am able to read the tags successfully but when I out on the lid and try to read it works 50% of the time and fails the rest of the time.
I have recently read that by partially shielding the antenna and making it directional we can increase the range of RF signals like wifi, bluetooth, etc.
I would like to know if the same trick can work with NFC readers as well? Is this a good method to increase the range of NFC by another 1 or 2 cm to read the tags?