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How are unique visitors calculated?

Every service determines unique visitors differently. Clicky uses cookies when they are available, but if not then we fall back on IP address.

Clicky calculates uniques on a daily basis only. This means if you are getting a sum of unique visitors over a range of more than one day, it will not be accurate because some uniques may be counted more than one time.

Currently there is not a way around this, but in the future we would like to fix it.