# Winston from the iota slack suggested I should write a tutorial
##
He suggested I included it in http://learn.iota.org/submit
Well, since I actually first need to develop it altogether, I thought I'd go collecting the info with articles here in steemit and then I can put it all there when it is ready. Right?

![iota-dig-wallet.png](https://steemitimages.com/DQmYy4wLNRMbiM33RGcmGP7A5iCDBDRqg6zWQdVpVqBCa3S/iota-dig-wallet.png)

One important aspect is that it shall work even in some phones. Also, the approach of using SIM-cards will allow for direct app readouts which are great. Still considering though.

## A Necessary Change

First, the goal, as I explained before is to be able to store the encrypted seed in cold storage. By now we strongly believe the best choice will be SIM cards, but that is under evaluation. So, chrome extensions do not allow for USB access but Chrome Apps do. That is why Ledger and Keep Key use Chrome Apps instead of only extensions. In the past, Keep Key used extensions because it was possible to bridge to the USB reader. Today it is not. So we changed to Chrome App. Here's a snapshot of current dev stage.

![Screenshot_20170630_154618.png](https://steemitimages.com/DQmRZd36zHBLernfeQbwoNza2JbSREavMPRx3FrBQ8Twjuv/Screenshot_20170630_154618.png)

#### Some Notes
We're happy to be able to use ECMAScript 6 so code gets really cleaner.

![Screenshot_20170630_154644.png](https://steemitimages.com/DQmaMQwj8LGjGt2BtHcZZnmyMuPKQxPTB8qXh714cmcQTer/Screenshot_20170630_154644.png)

#### Chrome Dev App
Here's a screenshot of the Chrome in Dev Mode with the packaged app. Very cool. Btw, I also have a Chromebook so it will work great in it too.
![Screenshot_20170630_155538.png](https://steemitimages.com/DQmQHNUSo7Rg2SEsHvufcb1cLkvbQMcppA9vacXJ98GqR3q/Screenshot_20170630_155538.png)

---
EDUARDO CAPANEMA
@bitworkers