Biometric Passports are neither "Good" nor "Bad."
They are inanimate objects without emotions, desires or feeling.
However, the governments that issue them can be good or bad. Without restraint, governments tend to exert more control over time and use the tools at their disposal in the carrying out of that control. Biometric passports can be a tool in this process. The passports themselves are not bad. The way they are used may be.