Put an nfc tag there, you can insert it behind the leather. Write the same key on it and that way you could tip your hat onto someonea phone for a quick transfer for later communications.
With the way you stitched it, you could easily push one of the flat flexible ones there without having to mess with the stitches
They tried to tell me you can’t drink bleach, but Trump showed me they were all fucking liars! And here I am now, recovered easily from the 5G that melted my throat!