Unlike conventional coinage-prone currencies, the cryptographic rules applied to bitcoin make their owners avoid the same risks.
Bitcoin payments are fully encrypted / cryptographic, so personal info is safe and unobservable to others. What other people can see is only the address used for the transfer only. You are also protected from identity theft cases that rampant in ordinary banking.
We can say that Bitcoin is the safest way because we can buy or we can purchase through the online system and we can pay also through the online system no need of bringing cash.