Generally speaking, the online training of safety officers must be face to face. This is because the training of safety officers needs to be certified and supervised to ensure the authenticity and effectiveness of the training. Training institutions confirm the identity of trainees through face-to-face methods, supervise their learning, and ensure that the training content is effectively transmitted and understood. In addition, face-to-face training can also provide interactive and immediate opportunities to answer questions, so that students can better learn and understand the training content.

However, for different training institutions and regulations, the specific online training regulations may be different. Some online training may allow facial recognition through images or videos, while other training may require real-time facial recognition through cameras. Therefore, you'd better consult the relevant regulations before attending the training to ensure that you can meet the training requirements.