There isn't any way to send or receive Bitcoins without using addresses, but if you use BIP70 Payment Requests, then you won't need to give anyone an address. The address will be part of the payment request and most modern clients will do all the work for you. You just need to allow the send.

Well I think the payment requests can already do what you describe.

You create a payment request and upload the request file to your site. If someone wants to pay, then they download that request and their client immediately recognizes it as a payment request. It will know where to send the Bitcoin and how much to send, so all the user does is enter their wallet password and hit ok. Then the client just sends the Bitcoin normally.

Payment requests?

Hmm! it have little bit similarity

So, the payment request is in software form?
How about tx id?

The payment request contains all of the necessary data for a transaction, e.g. the receiving address and the amount to send. The client parses all of that information and creates a normal transaction and sends the Bitcoin. It basically removes the step of giving people addresses to correctly copy and send to. You can read more about it here: https://github.com/bitcoin/bips/blob/master/bip-0070.mediawiki

your thoughts?

I don't think there's something like this, and I also don't see the need for this to exist. Looks like those things that make you buy gift cards in order to buy products: seems like a useless extra step to buy with/spend Bitcoins.

An address and modern clients do exactly what you're requesting: there's a "unique" code to which you can send funds

Don't think there is a need for such complication where he can just use the address and we have bar code scans which even make the process easier.Additionally you will need a hell lot of security measures since false codes can be generated to divert the payments .
Note :

BITCOIN address is an unique address so why you need to give your bitcoin address to generate another address which is just the simpler version of the previous address ? There is a reason why the address is complex,for security reasons.

wow, it looks quite interesting, and it seems increasingly difficult to be stolen, but I'm more interested if such transactions in blockchain, it makes everything we do be practical, because that is where excellence bitcoin

Yep! i also skeptical about this idea how it will work! whether it will gain exposure