Prison Act Article 71

Unless otherwise stipulated by law, a prison shall monitor and record inmate visits with video and audio recordings. The contents may not be used illegally.Where there are sufficient facts to believe that the visit may adversely affect the order or security of the prison, the prison may listen during the visit or review the contents of the video or audio recordings after the visit.Where the order or security of the prison is adversely affected during a visit, guards may terminate the visit and specify the reason in a written format.Visitors must not use communication or video or audio recording devices when visiting the inmate. Violations shall be dealt with in accordance with the preceding paragraph.
中文原文 監獄行刑法第71條
監獄對受刑人之接見,除法律另有規定外,應監看並以錄影、錄音方式記錄之,其內容不得違法利用。
有事實足認有妨害監獄秩序或安全之虞者,監獄得於受刑人接見時聽聞或於接見後檢視錄影、錄音內容。
接見過程中發現有妨害監獄秩序或安全時,戒護人員得中止其接見,並以書面載明事由。
與受刑人接見者不得使用通訊、錄影或錄音器材;違者,得依前項規定辦理。

English translation for reference only; the Chinese text prevails. Not legal advice.