Access token (API key) is special string used to authorize user to upload collected measurements to OpenCellID database.
The correct key must consist of digits 0-9 and letters a-f. Depending on registration date key format may look like this:
pk.9743a66f914cc249efca164485a19c5c
– 32 characters, preceded with 'pk.', total 35 characters9743a66f914cc249efca164485a19c5c
– 32 characters9743a66f-914c-c249-efca-164485a19c5c
– 32 characters in five groups separated by dash, total 36 characters9743a66f914cc2
– 14 characters