Even stranger: today tags must not be too near to the antenna.
If I put tags just on the antenna, I get:
[code]> 0xaa 0x00 0x02 0x03 0x26 0x27 0xbb
< 0xaa 0x00 0x03 0x00 0x04 0x00 0x07 0xbb
| Status = 00 OK
| ATQ = 0400
0xaa 0x00 0x01 0x04 0x05 0xbb
< 0xaa 0x00 0x02 0x01 0x83 0x80 0xbb
| Status = 01 FAILURE! Code=83 (Card does not exist)[/code]
But if I place a thick newspaper (so the reader have something to read 
) between tags and antenna, with the same reader and the same tag set as above I get:
[code]> 0xaa 0x00 0x02 0x03 0x26 0x27 0xbb
< 0xaa 0x00 0x03 0x00 0x04 0x00 0x07 0xbb
| Status = 00 OK
| ATQ = 0400
0xaa 0x00 0x01 0x04 0x05 0xbb
< 0xaa 0x00 0x06 0x00 0x00 0xe2 0xc4 0x77 0x33 0x64 0xbb
| Status = 00 OK
| Flag = 00
| ID=e2c47733[/code]
Well, strange but still “understandable”. What I really can’t understand is that “Flag = 00” instead of “Flag = 01”. Maybe a limit in the reader firmware? But I remember seeing a ‘01’…