ANSWER:

Counting your adhkar on your right hand fingers has more reward as they will bear witness for you on the day of judgement. There’s no problem in counting on beads as well but it’s highly recommended to do it on your right hand fingers. 

Is reading subhan Allah, Alhamdullilah, Allah u akbar,,, with the tasbi(chain of beads) an innovation? Is there any authentic Hadees regarding dis.. I know it’s better to read it on your fingers, but sometimes I just miss out the counts, so can I use tasbi as well..and reading with tasbi chain reward is equivalent to that of reading in fingers??