And on the subject of handshakes:
A (female) friend of mine applied for a job. She had an interview with the (frum, female) owner of the business, who apparently liked her a lot. She took my friend to the office of the (non-Jewish, male) head of one of the departments. He extended his hand. At that point my friend had a split-second to make a decision. She could possibly offend the department head by not shaking his hand, or possibly offend the business owner by shaking the man’s hand. She chose not to shake his hand. He was offended. My friend did not get the job.