Under which condition are players allowed to use electronic devices during matches?

Players are permitted to use electronic devices during matches primarily for tracking life totals and other game-related aspects. This allows for accurate gameplay management, as players can ensure they are maintaining correct life totals, counters, and relevant game state variables. The stipulation of "without outside assistance" is crucial, as it maintains the integrity of the match by prohibiting interactions that could provide an unfair advantage through outside information or assistance.

In this context, tracking is a practical approach to prevent mistakes and disputes during play, which helps to maintain the flow and fairness of the game. Other options imply using electronic devices for purposes that may introduce issues such as external information or strategies that are not permitted during play, which is why they do not align with the rules governing the use of electronic devices in sanctioned Magic: The Gathering events.