There are fears recordings from the GardaGate controversy could impact trials - even where evidence within them wasn't used in court.
A number of lawyers say they believe if information in the tapes recorded at Garda stations - wasn't disclosed in court it could re-open dozens of cases.
Taoiseach Enda Kenny says he ordered a Commission of Inquiry to be set up because of the potential impact on prosecutions and Tribunals.
And Barrister Darren Lehane - who specialises in administrative law and tribunals - says the consequences could be far-reaching.
