Judges from the South Jakarta District Court who brought down the initial guilty verdict against the two teachers in part relied on evidence from Indonesian sexologist Dr Naek Tobing.
The doctor was used by the prosecution to assess whether Mr Bantleman's sex life caused him to become a paedophile.
The system would refuse to [report a match] if the pictures were from two different people,” Hery said as quoted by on Tuesday.
Earlier this year police summoned Firza for questioning after screenshots of what appears to be steamy Whats App chats between Rizieq and Firza were uploaded to the internet.
90% of the girls there are looking for a stable relationship. And maybe less than 1 percent is looking for a one night stand (not the hottest girls usually).
The fact that they are looking for a stable relationship does not mean they want to get married straight away.
Hery Cahyono, a face recognition expert from the police’s Indonesia Automatic Fingerprints Identification System (Inafis) division, said authorities used several methods, including biometrics, to check whether the woman who appeared in the sex chats was really Firza.
They concluded the Canadian had a "deviant sexual behaviour" and that his actions could be classified as "inclusive paedophilia".
The initial judgement found that the Canadian's sex life with his wife was "abnormal" because they had sex about once a week and sometimes less.
In their ruling, the panel of District Court judges found that "normally it happens every day or at least two or three time per week", and that "usually men would at least masturbate but he doesn't do it".
“This case is fabricated and libellous,” Firza’s lawyer Azis Yanuar said.
The Jakarta Police confirmed on Tuesday that Rizieq, who has ignored several police summonses for questioning over the alleged pornographic text conversation, was in Jeddah, Saudi Arabia.