Stealth protection, commonly known as dark escort in the industry, has the advantage that customers' normal life and work will not be affected at all. Customers can freely do what they want to do, and bodyguards are always accompanied in the most secret place. Once the customer is disturbed by an unsafe signal, the bodyguard will come forward to deal with and eliminate it at the first time, or the guard will return to the "invisible" immediately after the treatment. At the same time, it will not add any trouble to the customer, so that the customer will be in a high degree of safety wherever he is. Of course, this puts forward higher requirements for the professional ability of bodyguards. Ace shield's shadow special escort operation service is specially set up for such customers.