Hi to all! I have an idea to 0-conf problem

[barborico]

Hi! I have just registered for proposing this idea.

The idea is a preconfirmation.

WTF?? let me explain. its as simply as a detector of double spending (check if after a transaction received (and not confirmed), that wallet sends another transaction within 10 second interval or less). if true, it means the payer has tried a double spending and should not be trusted.

Good or useless idea?