Im not sure about that, but check this out from nostr:nprofile1qqsy3ka4uut6vgsavn738wsj099u9rjsv7kp6a3ja62r04fnwun4phcpz4mhxue69uhhyetvv9ujuumfva5hgtnfduhsnkjzz5 for anonymous travel using the standard apps
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Oh yeah, I remember seeing that and thought it was pretty clever!