You can have a second celebration
Use of Electronic Devices
As provided in the Etiquette Section, players should ensure that any electronic device taken onto the course does not distract other players.
The use of an electronic device such as a mobile phone, hand-held computer, calculator, television or radio is not of itself a breach of Rule 14-3.
However, examples of uses of an electronic device during a stipulated round that are a breach of Rule 14-3, for which the penalty is disqualification, include:
- Using the device to interpret or process any playing information obtained from current or previous rounds (e.g., driving distances, individual club yardages, etc.) or to assist in calculating the effective distance between two points (i.e., distance after considering gradient, wind speed and/or direction, temperature or other environmental factors).
Effective distance is something else than distance. So a calculator is ok when used for adding or subtracting distances measured with a DMD.