This question involves criminal techniques, and I should not provide specific techniques or methods that may be used to commit theft. Theft is an illegal act that infringes on the property rights of others and causes economic losses and psychological harm. On the contrary, I can provide some suggestions on how to protect the safety of personal property： -Be vigilant in public places and pay attention to your surroundings -Do not put valuables on the outside of your jacket pocket or backpack -Keep the bag in sight at all times, do not put it under the seat or behind you -Take special care of your belongings in crowded places -If suspicious behavior is found, report to the security personnel or the police in a timely manner Improving safety awareness can help prevent theft.