iOS fingerprint recognition

#import "ViewController.h"

#import <localauthentication/localauthentication.h>

@interface Viewcontroller ()

@end

@implementation Viewcontroller

-(void) Touchesbegan: (nsset<uitouch *> *) touches withevent: (uievent *) Event {

/ /Fingerprint Identify Core Code // Create a local Authentication Context

lacontext *context = [[lacontext alloc] init];

Check whether the device supports fingerprint identification

Biometrics: biostatistics, this is fingerprint recognition.

if (! [Context Canevaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics error :Nil]) {

NSLog (@ "Your device does not support fingerprint recognition!") );

return;

}

For fingerprint identification

Localizedreason: Why do you need fingerprint identification?

[Context evaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics localizedreason:@ " Payment Please enter fingerprint " reply: ^ (BOOL success, nserror * _nullable error) {

if (success) {

NSLog (@ " successful fingerprint identification ");

}Else{

NSLog(@ "Fingerprint recognition failed:%@",error);

}

}];

}

@end

iOS fingerprint recognition