Most modern touch screens use "capacitive touchscreen" which you can read about at length here, but in short it means that for a glove to work with a touch screen it needs to complete a circuit with your finger.  So that's what we're going to do by putting some conductive thread between the screen and our finger.

Skills
You need to be able to sew a few stitches without killing yourself.

Supplies
You will need:

• A glove.
• A needle.
• 12" (30cm) of conductive thread. (TIP: If you don't want to buy a whole spool, you can buy a few feet much more affordably from SparkFun with the Lilypad Bobbin.)

What's conductive thread?  This great article over at Fashioning Technology will tell you everything you need to know and where to get some.  And when you get some, you'll find there are tons of interesting things you can do with it.  Just look!

(Thanks to the good people at reMake Lounge for introducing me to conductive thread at the last Instructables Build Night)

That's it, lets get to it!