[Method-X]

When I had 23andme sequence my DNA, I used a fake last name and pre-paid credit card.

[albertgoeswoof]

But if enough of your relatives get sequenced, they’ll know who you are anyway

[authed]

If your family members got it done with their real name, they will be able to create a link.

[amelius]

Uh yeah, but you logged in from an IP address which Google already tied to your real name.