Keyless home deadbolt locks are expected to come into the mainstream in the future. The Goji Smart Lock, pictured, is due next month and the August smart lock later in the spring. They require only a smartphone with Bluetooth 4.0 or a Bluetooth 4.0 key fob to unlock.
{"Image ImageWidth": "5760", "Image ImageLength": "3840", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Make": "Canon", "Image Model": "Canon EOS 5D Mark III", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Elements 11.0 Macintosh", "Image DateTime": "2013:12:29 13:15:07", "Image Artist": "Mark Serr", "Image YCbCrPositioning": "Co-sited", "Image Copyright": "mark@markserr.com", "Image ExifOffset": "380", "Image GPSInfo": "1304", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1408", "Thumbnail JPEGInterchangeFormatLength": "7056", "EXIF ExposureTime": "1/125", "EXIF FNumber": "0", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "125", "EXIF SensitivityType": "Recommended Exposure Index", "EXIF RecommendedExposureIndex": "125", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2013:12:22 16:22:34", "EXIF DateTimeDigitized": "2013:12:22 16:22:34", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "7", "EXIF ApertureValue": "2147483648", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "0", "EXIF SubSecTime": "09", "EXIF SubSecTimeOriginal": "09", "EXIF SubSecTimeDigitized": "09", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "5760", "EXIF ExifImageLength": "3840", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "1272", "EXIF FocalPlaneXResolution": "1920000/487", "EXIF FocalPlaneYResolution": "320000/81", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Manual", "EXIF SceneCaptureType": "Standard", "EXIF CameraOwnerName": "mark serr", "EXIF BodySerialNumber": "182029016683", "EXIF LensSpecification": "[0, 0, 0, 0]", "EXIF LensModel": "", "EXIF LensSerialNumber": "0000000000"}