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I am doing a POC block chain application, not a crypto currency once.

I saw many examples determining user by using msg.sender attribute, my question is can we manage users in block chain app like we do in regular applications?

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Do all users need to have an EOA type account ?

mahesh gupta
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In order to interact with a Dapp users should have an account because they need to send transactions (Normaly users use a Dapp Browser which has a built-in account manager). msg.sender provides you the sender's address (it could be a contract) read about msg.sender and tx.origine : What's the difference between 'msg.sender' and 'tx.origin'?

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Badr Bellaj
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  • what is a dapp browser ? when you mean account it is EOA right? if it is EOA how can we have attributes like username etc for it? because all we have is an address. – mahesh gupta Dec 09 '16 at 10:23
  • Dapp browser is the app used by users to interact with your Dapp eg: MIST. the network is supposed to be anonymous so you should setup an identity system (users send their credentials withing transactions to your *Dapp)or search for an existing one based on ethereum. – Badr Bellaj Dec 09 '16 at 10:52