After entering a set of girls and having them introduce themselves,
apologize and tell them your litterally retarded when it comes to names.
Then proceed to pull out your phone and enter their names according to
where they're standing (real or made up ones)
(make sure to screw up at least one name).

Eg.
Sarah
Lisa
Abbie

*This means of the group the left is sarah, middle lisa, right abbie.

Continue interaction and later on whilst one of them is talking excuse yourself pull
out your phone and hold it up so they know what your doing. Say sorry to the
person that was talking using there position (left sarah, middle lisa, right abbie)
regardless of if they have changed positions. When they say no I'm ____, tell
them your phone doesn't lie. After arguing the point for a bit, get them to arrange
in correct order left sarah, middle lisa, right abbie whenever you pull your phone
out to help you with there names. Most girls love this and are only to happy to help.
Just make sure you don't over do it. At least once pull it out and when they move
apologise and tell them your just checking your messages.

Seems like a nice routine, though should only be used early on in the interaction. (During attraction building, possibly the first stage of comfort) The effects will be negative while you're in the middle of comfort building.