Smart Safe Posted by Oh My! in Gadgets, Gifts A safe locked and unlocked by your smartphone. Works with both iPhone and Android, locking app is a Free download. Get this at Convenient Gadgets – $29.95 1 Leave a Reply Cancel reply ERROR: si-captcha.php plugin says GD image support not detected in PHP!Contact your web host and ask them why GD image support is not enabled for PHP.ERROR: si-captcha.php plugin says imagepng function not detected in PHP!Contact your web host and ask them why imagepng function is not enabled for PHP. Comment Basic HTML allowed.