A memorandum of understanding signed by Aceh Gov. Irwandi Yusuf and Yuspahruddin, head of the provincial Law and Human Rights office, stipulates that caning can only take place inside prisons or other places of detention.
It says adults can still witness the punishment but recording won't be allowed. The numbers of people will be much smaller than the hundreds who regularly cheered the outdoor proceedings.
'The aim of holding the caning inside prison is to prevent it from being watched by children, without cameras and hand phones,' Yusuf said after signing the memorandum, witnessed by Indonesian Minister of Law and Human Rights Yasonna Laoly.
Aceh is the only province in Muslim-majority Indonesia that practices Shariah law, a concession made by the central government in 2001 as part of efforts to end a decades-long war for independence.
Human Rights Watch dismissed the change to indoor whipping as cosmetic and called for Aceh to abolish caning and the laws that allow it. It said caning remains a form of torture whether it is carried out in public or not.
'Torture is torture whether you do it in public, outside a mosque after Friday prayers, or inside a room, banning anyone from taking a picture,' said the group's Indonesia researcher, Andreas Harsono. 'It's still torture, it's still traumatizing.'
Human Rights Watch also appealed for Aceh to release four people arrested in March for same-sex conduct, who each face up to 100 lashes under the province's Islamic criminal code.
Hundreds of people have been publicly caned since the punishment was introduced in Aceh in 2005.
The province's implementation of Shariah law has become increasingly harsh and now also applies to non-Muslims. Last May, the province for the first time caned two men for gay sex after vigilantes broke into their home and handed them over to religious police.
Footage of the men, both in their 20s, being caned dozens of times in front of a baying crowd galvanized international criticism of Shariah law in the province and was another blow to Indonesia's reputation for moderation following the imprisonment of the capital Jakarta's minority Christian governor for blaspheming Islam.
The last canings were on Feb. 27, when five people including two Christians convicted of gambling were punished in the provincial capital, Banda Aceh.
A group of amorous couples and alleged sex workers were publicly whipped for breaking Islamic law in Indonesia's Aceh Friday, just a week after the province pledged to move the widely condemned practice indoors.
The province has formerly seen three men and five women - who included several college students - found guilty of violating religious law by either showing affection in public or for offering sexual services online, officials said.
Rights groups have derided it as cruel and last year President Joko Widodo called for an end to public whippings in Aceh.
Around 98 percent of the province's five million residents are Muslims, subject to religious law, including the public whippings which came into practice around 2005.
The new rule has generated protests from conservative groups who see public whippings as having a strong deterrent effect on crime.
Banda Aceh's deputy mayor Zainal Arifin said Friday's flogging was not an act of defiance against the new rules.
'We understand that the regulation has not yet come into effect and the prison is not yet ready to (host floggings) so that is why we are still doing it' in public, he said.
'Until the new regulation is officially in place we will carry on as usual.'
