The NFC chip UID on most NFC chip types is determined by the chip manufacturer, programmed to the NFC chip during manufacturing and is permanently read-only; meaning that it is not possible to change the value of the UID via software. The fact the UID is not changeable is what makes it useful for NFC security systems. Some NFC chip types support random UIDs; these are still read-only.
There are NFC chip types that allow for the UID to be changed by software after manufacturing; this has significant effects on NFC security and must be protected against. This feature is particularly beneficial in scenarios where the NFC chip needs to mimic or replace another chip for testing, security research, or system development purposes. Additionally, these chips often come with a range of customizable parameters beyond the UID.
In general, GoToTags does not work with or support NFC chip types with writable UIDs.