I was pulled over in indiana?

I was puled over by a trooper in indiana. I asked him to see the radar which said 87, on the ticket he wrote 88. He printed out the ticket, and gave it to me without signing. In Illinois they sign the ticket from what i hear, i dont know, seeing as its the first time ive gotten pulled over for speeding. My question is if the trooper forgot to sign the ticket, is it invalid in Indiana?