RFID ID-12 as writter - is it possible

Hi,

I bought ID-12 Kit

Working perfect as reader.

But I have bought from ebay rewriteble TAGS (also 125Khz known as EM4100)

I was almost sure that I will find a way to write to these TAGS.

But I can’t find how to do it?

How these TAGS can be written - without seller tools?

Is this some “special sequence” for writing?

Or may be the reader can’t work as writter?

Some one knows how this works?

Thanks,

Roee.

hi,

to identify the chip used in the tags, try browsing through these datasheets

http://www.emmicroelectronic.com/Line.asp?IdLine=3

The ID-12 cannot write to tags.