Very interesting find, one of those that when you read the title you immediately realize its so obvious, just you never thought about it before!
One thing to note, the date could still be used to identify using any date, say 01/17/2157 identifies you. What could be done is to restrict the date to (present time - 3.months) <= last-modified <= present time.
That effectively reduces the number of people they can track to 7776000. Rounding off the seconds would reduce it to 129600.
One thing to note, the date could still be used to identify using any date, say 01/17/2157 identifies you. What could be done is to restrict the date to (present time - 3.months) <= last-modified <= present time.
That effectively reduces the number of people they can track to 7776000. Rounding off the seconds would reduce it to 129600.