Please keep a watch on this, It will be really interesting to modify accordingly using a script, and be able to make an image for TP-LINKs that reads not just the macaddress to make SSID look like factory one "TP-LINK_XXXXXX" also with your PIN (also printed on bottom label) use that as a default password too.
This was a post from me some time ago: https://forum.openwrt.org/viewtopic.php?id=69509
I reposted here: How to read TP-Link factory wireless pin from flash - art