Will Two RFID Readers Read Further Than One?

Bought this RFID reader for smartphone thing to play around with.

Its great except for one thing; it sucks.

The range that is, its about 8 ft max, (using the small passive rfid stickers I have). So I was wondering if I could extend the range by having another unit blasting it with radio waves at the same time.

The theory would be that the output of the RFID is proportional to its input so two readers would generate a stronger signal.

Though two things might work against that

  1. Phase cancellation/comb filtering
  2. The direct output of one reader interfering with the other.

Wild speculation encouraged...

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