During the last few years that I practised dentistry, most of my patients brought mobile telephones into my surgery.
You would be surprised how many patients tried to answer their ‘phones when my fingers were in their mouths or their mouths were filled with impression (mold taking) material.
Worse still, were patients who were ‘texting’ constantly when I was trying to explain their treatment options to them.
Once, a patient arrived late, speaking on his mobile phone. He muttered to me that he was in the middle of a telephone job interview. I had no choice, but to let him continue. After half an hour, he told me he was ready for me. I told him that he had wasted my time and his appointment and had to book another one.
In the end, I put up a large sign in my surgery forbidding the use of mobile phones, which was rude and inconsiderate. This solved the problem because, to my surprise, most people obeyed it.