do you think that it will be a law to seal the ninja body after his/her death to prevent any possiblity to use them by Edo again? if not , what should they do to prevent it to happen again? 
for example what if after 100 years someone use Naruto body with edo tensei can you imagine that?!!
for example what if after 100 years someone use Naruto body with edo tensei can you imagine that?!!