Quote from: pooya87 on March 13, 2017, 05:48:03 AM

Quote from: eclecticuniversalas on March 13, 2017, 04:23:21 AM

Quote from: pooya87 on March 12, 2017, 05:23:59 AM

the question is "why".
when you can use a much easier way of using a live linux (without the hassle of a cell phone and its privacy hazard of constantly being connected to the network and even possibly broadcasting data to your network provider) and print the safest cold storage meaning on a paper, why would you choose to use your cell phone?

Because its portable. no funded BTC cold storage is on it, thats on an external sd card, (easy to stash away), this is only a portable qr address; reader, generator, and transfer system. I have used linux usb and i always had to find a computer to generate addresses. This lets me do it whenever, wherever, and securely on the fly. A linux usb and trezor didn't offer me that. I often sit on a bench in a park or in my car at lunch and generate addresses offline in minutes. I always have it on me as I carry it around with me it always has only one BTC address and keys with around $20 on it (for a beer or quick trade). And other than that all it has is a few blank generated public qr addresses waiting for putting funds onto it, As I have the blank copies at home as well with the private key in cold storage this is no problem, It is more portable than my linux usb, and as a bonus, this totally offline device has a screen for displaying QR and a camera to take a pic of another QR and save it to file.

there is one thing wrong with your thoughts in my honest opinion.
a cold storage is something that you "put away" or in other words you don't plan on accessing the funds in it every day or even every week or in case of long term hodlers even for years.
and for that you don't need or i better say you shouldn't carry it around.

if you want to receive funds in that cold storage, the only thing you need is one address, its public key or since you like it so much its QR code.

if you want pocket ~~money~~ bitcoin then use a hot (mobile) wallet with small amounts that you want to spend.

in short other words. cold storage is the dollar bills you hide in your mattress and hot wallet (portable on your cell phone) is the dollar bills you put in your back pocket. since you don't carry your mattress around with you, around your neck, there is not reason why you should carry your cold storage with you either.

My SD card and printed paper wallets are my cold storage, Once I save my generated info into addresses keys I put them on an sd card and erase the generated address contents on the device. I do however Keep a few addresses on it with about $50 so i can use those funds on the fly.