Whether to Carry Passports all the time

We will be in Switzerland for 8 days and will not leave Switzerland border and re-enter in between these 8 days.

My question is whether every day we will have to carry the Passports with us? Does Passports are to be shown along with the Swiss Pass every time?

To carry the Passport all the time brings extra botheration and additional Risk. Can we carry the Photo copy of passport in lieu of original?

Please help some one.

Regards
Atul Bhide

My only comment is that last month my husband and I visited some out of the way (i.e., not in the Rick Steves' travel guide) villages across Switzerland, and on the train/bus/boat routes, a few conductors were not as familiar with the Swiss Pass and did indeed ask to see our passports. This didn't happen every time, but it happened about half of the time. This is the first time this happened to us (visited in 2010 and 2011), but we were lucky we had our passports at hand. But your "mileage may vary"!

Thanks Wandermann and KaraBoo both,

The summary is - it is better to carry the passports than to spoil the holiday mood.

Regards
Atul Bhide

always good to know this, was debating the same thing myself, or whether to just take our uk driving licenses with us during daytime travel