Air tight bag with a tablet device safe?

[Isaac]

I have a tablet like device that doesn't have to be charged for about a month at a time. So I figured why not just use it through a zip-lock bag? I put it in and it works great, except for the extra bit glare. I'm a real man; I can handle a little bit of glare.

I'm worried that condensation might build up inside the the bag making little droplets of water that would get into the device.

Condensation might build up from a hot walk to class followed entering a really cold class room.

It is in a protective zipper case (cover) already. But I like to read with drinks and food and there's no protection provided by the cover when it's open. I eat like Slimer, from Ghostbusters. The zip-lock plastic bag is held very well by the zipper case. I would show a picture, but I've lost my mini-usb cord.

[Spidey]

You might try some of those silicone packets to keep it dry. You know the ones…”do not eat”.

No guarantee tho…

You can probably get those at any place that deals in packaging material.

[Isaac]

That's an excellent idea!

[sdfgeoff]

We do some sailing, and we often take cellphones with us, and keep them dry in .... Ziplock bags....
In fact, we have one given to us by the coastguard (via the vindscreen wiper) with nice instructions to keep the cellphone on as an emergency contact.

So if a ziplock can keep salt water and spray out of a device, I think it can keep soda, fizzy, coke, soft-drinks or whatever you call it out.

As for condensation, now does it get in? If it's sealed then no water can get in there, and besides, doesn't the device have to cope with humidity?

[Isaac]

I think humidity doesn't cause harm until the humidity has gone through to an extreme heating then an extreme cooling. The heat forces all moisture to the outside as it tries to evaporate, organizing the moisture at the bag wall, and if chilled, like in a class room, that moisture, organized at the wall, will turn into droplets. That's, at least, how I envision it.

Anyway, I've already ripped a hole in the bag because I'm a horrible monster that breaks everything I touch! At least it's a hole that can't be seen from the front of the device, so it's still usable, protecting from splatter.