Birthmarks, hairstyles, personalities, etc.
well you do need a way to tell them apart...
no identical is where you cant tell them apart and you can they are still indentical but u can tell them apart
No. Neither twin is physically disabled. They are difficult to tell apart in any way.
None of the Gosselin twins or sextuplets are identical, so it is easy to tell the Gosselin children apart.
Identical twins develop from a single egg that splits into two.Identical twins can be so similar that their parents cannot tell them apart.
Minnesota Study of Twins Reared Apart
yes they are No, They arent twins, They are 2yrs apart
No, twins are born from the same pregnancy.
no but their birthdays are a day apart
No, they are not twins. They're sisters, but they are about 4 years apart.
If you mean apart she explains in the anime that she can tell because she sees Hikaru as a bit more devious than Kaoru. Everyone who watches the anime can tell from the difference in voice actors, though.
It is hard to tell identical twins apart from each other. The apartment buildings in the complex are identical, and it is easy to get lost.