I too have this excess perspiration problem. My feet and palms sweat so much that it's difficult to do any sort of work. And while working with others, it's too embarrassing when we share things like pen or helping them with their things, as we leave some sweat on those things. Even shaking hands is too embarrassing.
Here are 2 ways:
- Antiperspirant lotions
- Cotton gloves (doesn't reduce sweat, but you won't have irritation while doing things)
I use antiperspirant lotions, these reduce sweat but some may be allergic to these lotions. These lotions work but sometimes, I sweat a lot even after applying them. Some people may find these allergic, so choose the one which fits you the best.
When I was in my school, I used to wear cotton gloves while writing and using computer as I sweated way too much than now in school and even holding a pen was irritating (I think you understand what I mean).
So keep a pair of gloves in your pocket, use them when you feel you're about to sweat.