The description implies that it does name matching only: > This online service compares the name read from your ID card, your electronic residence permit or eI

The description implies that it does name matching only: > This online service compares the name read from your ID card, your electronic residence permit or eID card for citizens of the European Union with the name specified in your OpenPGP key. If the names match, your public key is electronically signed by Governikus, confirming the match.