Torx drive has been in common use for a long time now, probably about 15 years. In the small sizes it's not unusual to see a tamperproof torx with a pin in the centre, these require a corresponding Torx bit. Male Torx head bolts and screws have become popular as well. There is also a five pointed Torx style head. Others in use are the spline and Ribe designs.
If you round out a standard female allen key head, the hot tip is to hammer in a slightly larger Torx bit, works almost every time