When riding a bus, FX or jeepney, please be suspicious. It’s for your own good. Don’t trust any person you are sitting beside with especially men or women with knapsack or little backpacks. I myself has been indirectly suspected as a pickpocket many times by other passengers, i should not get insulted because i do this to other passengers.
Most pickpockets or thief would bring an empty knapsack, they use this to literally cover while reaching for the wallet of a poor passenger.
These thieves would sometimes drop their coins or any object to attract the would be victim’s attention to it, while his business partner is busy getting his hands on the wallet.