yoga-

/*
 * Adds the serialNumber property to the UIDevice class
 *
 * The implementation uses undocumented (for iOS) IOKit functions,
 * so handle with caution and be prepared for nil.
 */

#import <UIKit/UIDevice.h>

@interface UIDevice (serialNumber)

yoga-

//generates a random password of length minimum 8 
//contains at least one lower case letter, one upper case letter,
// one number and one special character, 
//not including ambiguous characters like iIl|1 0oO 
function randomPassword($len = 8) {

    //enforce min length 8
    if($len < 8)
        $len = 8;