A man convicted in the United Kingdom in the 2001 shoe bomb plot can testify through a video link at the terrorism trial of Osama bin Laden’s son-in-law and former spokesman, a federal judge ruled Wednesday.

The testimony will be used at the trial next month of Sulaiman Abu Ghaith, who has pleaded not guilty to charges that he conspired to kill Americans in his role as al-Qaida’s spokesman after the Sept. 11 attacks. If convicted, he could face life in prison.