how to remember login in zope?

[astarocean]

how to remember login in zope?
so when user came back , they needn't input username and password
again.

i'm using zope,extensiveuserfolder and cookiecrumbler,
exuserfolder is set to cookie-based authentication.

i'm not using cmf or plone , how could i handle this?
thanks a lot.

i'm working around this for two days and surfing a lot of pages but
still felt confused, any suggestion would be appreciated.