If you can avoid those things, of course problem is solved, however there are times when you have to do something, like putting it in it's cage after playtime. In that case, intercept it as explained in the holding section above. I would suggest putting a tiny bit of yogurt low fat or chicken with apples baby food,, honey, or whipped cream on your finger tips or where ever it is biting at. In fact, what I suggest is, using it as a training aid at the beginning during the time when you have them in the cage, every time you put your finger near it, have something on your finger tips. It may bite you once, but then it should start licking you.
Some people blow in their face to stop it.
Most gliders hate direct air being blown on them. The sound should get it's attention and make it think that every time it bites you, that it caused the horn to blow, therefore thinking your skin honks when bit. You can take a piece of cardboard and tie a string on it in the middle to put on your fingers, every time it started to bite place the cardboard between it and your skin. It makes it very hard to bite your skin if there is something flat that it can't bite into. Some people when they bite, place the glider back into the cage, to teach it that if it bites, they get no outside play time.