A transparency plan is an agreement between a contrite formerly-wayward spouse and their husband/wife once they have agreed to end all contact. It includes changing cellphone numbers (and having the new one contain detailed billing, with the bill coming to the betrayed spouse), and having the phone accessible and available at all times to the betrayed spouse, without being locked. It includes exchanging daily schedules, keylogger on the computer if that was used to text and e-mail OM/OW, possibly a GPS on the car -- whatever it takes for a period of time for the betrayed spouse to feel comfortable and to allow trust to be re-built.
You can Google "infidelity" "transparency plan" to see a better description, and some examples.
100% no-contact, including a no-contact letter, plus a good transparency plan, are essential in any recovery/reconciliation.