1. In fact, learning how to use these weapons properly is probably trickier than the driving side of things.

2. It can be even trickier to arrange control of our digital assets.

3. One of the trickier issues involves creating the digital signature.

4. Chief executives, on the other hand, had to deal with things at a trickier level.

5. The transition is far trickier than it sounds.

6. But advertising may be trickier to annex.