After the Fota teams left the meeting on Wednesday after it was made clear to them that they would not be allowed to participate in discussions, the remaining teams rubber-stamped all the rules that had been proposed and agreed by the F1 Teams' Association.
Most are simple designs, essentially a pen with a rubber tip that mimics the conductive property and shape of a fingertip. (Steer clear of styluses with fine, hard plastic tips, which are designed for older gadgets like the PalmPilot and won't work with today's touch screens).