"An accused subject to summons to appear may submit a written request to the Trial Chamber to be allowed to be present through the use of video technology during part or parts of his or her trial," the document approved by the 122 state parties of the court said yesterday.
"The Trial Chamber shall rule on the request on case-by-case basis," added the document seen by AFP.
The parties also agreed to accord special status to a defendant who is "mandated to fulfil extraordinary public duties".
The relaxed trial condition came amid a push by Kenya's President Uhuru Kenyatta and Vice President William Ruto to be excused from attending their separate trials.
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The two, who are accused of fomenting political unrest after a 2007 election in which more than 1,100 people died, argue that their presence at the trials would hamper the running of their country.
Just a day ago, the ICC reversed a ruling to allow Kenyatta to attend only parts of his trial.
The assembly of the court's 122 member states opened on November 20 at the Hague and is due to go on until today.
The meeting has been seized by some African countries as an opportunity to criticise an institution that they say discriminates against their continent.