Using the great feature "Accurate User Detection cross devices #3490", there should be a possibility to still know from where/which device which sites have been visited /which actions (events) have been made by the visitor.

Maybe one could give in the visitor profile:

• the number and types of devices used by this visitor (on the left in visitor info)
• add the number of visits in percent by each device
• the information from which device each visit was from (in the head of each visit, right column) and
• maybe something like a filter e.g. with tabs to see "all visits", "visits from device 1", "visits from device 2" ....

as proposed in the comments from #3490, this was extracted and extended to an extra issue