While passive entry is generally considered safe and secure, there are some potential security concerns associated with the technology. Hackers and thieves have found ways to intercept and amplify the signals sent by key fobs, which can allow them to unlock and steal cars that are equipped with passive entry. To mitigate these risks, some car manufacturers have started using more secure wireless protocols and encryption methods to protect their systems. Additionally, car owners can take steps to protect themselves by using physical barriers such as steering wheel locks or parking in well-lit areas.