Quote from: gtraah on September 17, 2014, 01:36:52 PM

Quote from: Jan on September 17, 2014, 01:27:01 PM

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With the current version of Mycelium you can go to the Keys tab and see the addresses you are working on. Some of those addresses have a key associated with them, they are the ones you can spend from. The ones without a key are so called read-only addresses, you can monitor them but not spend from them.

With Mycelium 2.0 the Keys tab is renamed to Accounts. All your existing keys/addresses are now called accounts and work like before. Those are the ones I call legacy accounts.

In addition you will have one or more Hierarchal Deterministic (HD) accounts following the BIP32/BIP44 standard. An HD account is one that automatically generates new addresses as you use the wallet for sending and receiving. This means that you get much more anonymous (today anyone who knows your Mycelium bitcoin address can see all transactions associated with it).
Furthermore, because we now have BIP32 support this means that one backup of one secret is enough to generate all the private keys/addresses you will ever need for all the HD accounts you will ever need. Everything can be deterministically generated from one secret. The backup mechanism we use follows the BIP39 standard, and basically involves that you write down 12 random words on paper.

As a user you will not have to worry about all of those addresses, they are managed internally.

Today Mycelium lets you monitor 20 separate bitcoin addresses. For some of those addresses you also have a key (the default), which lets you spend from them

Great So what your saying is the old way will not disappear, I will be able to choose ?
Lets just say I want to make a new account can I make it like a legacy ? And how will I be able to make another legacy type account with Mycelium 2.0, I assume there are options for this? Or are you saying that ANY new account created from M-2.0 will be HD and will transact in the NEW style?
If this is the case does this mean I will never be able to make another legacy account with M-2.0 other than my old account from previous version of mycelium meaning I will have to make it outside of M-2.0 and then import it? Thanks for clarification

I mean who knows when I feel comfortable I may jump to HD, but its still great to have a choice.

Correct, you have a choice.
But, the wallet will no longer let you create new random legacy accounts (create a new random key), you can however import a private key that you have made elsewhere by selecting Advanced when creating a new account. In that scenario we expect the user to know what he does and that he has the private key stored safely outside the wallet. It will not be part of the HD account backup.

We really wish our users to be safe and not loose funds because they sent funds to a key that they cannot recover.

You should really try it out. Everything is available for the testnet, where you can play around with worthless testnet coins: https://play.google.com/store/apps/details?id=com.mycelium.testnetwallet
Once you have it installed you can get free testnet coins by "buying" them (for free) from Virtual Trader when you click Buy / Sell Bitcoins