As stated in the previous tip, off-piste skiers should always be equipped with an avalanche transceiver, probe, shovel. An avalanche transceiver should be worn by anyone skiing in the backcountry to help locate those buried in an avalanche.
Should a member of the group get buried in the snow, a shovel can be used to dig the person out based on the location given by the transceiver, using the probe to establish how deep the person is buried. Avalanche airbags are also worth considering; by pulling on the toggle of an avalanche airbag as the avalanche heads towards you, the bags will fill with air bringing you to the top of the surface and stop you from being buried.
For further safety tips, many ski resorts often put on avalanche talks and training sessions, ideal for skiers looking to explore the backcountry safely.