Hello, apologies first, English is not my first language.
We want to raise ethereums for our project (ICO).
We want it to make individual address for every single person who registers on the website

so that we can know who sent the ethereum when we get them.
If address XXX is assigned to person A, and if we get eth in that address,
we would know that A sent eths.

Could anyone tell me how one does this please?
Any reference? How can one manage a LARGE number of wallet addresses?