问题描述：
我使用 Dropbox 将照片从我的智能手机同步到我的笔记本电脑。我过去曾使用过一个名为 jhead 的命令行实用程序，根据 JPEG exif 元数据自动对照片进行排序和重命名。
例如这个脚本：
#!/bin/bash
jhead -model GT-I9100 -n%Y/%m-%B/User1-%Y-%m-%d_%H:%M:%S *.jpg 2> /dev/null
jhead -model P999 -n%Y/%m-%B/User2-%Y-%m-%d_%H:%M:%S *.jpg 2> /dev/null
将根据 JPEG exif 数据重命名每张图片。所有与相机型号 GT-I9100 匹配的照片都将在标题中以“User1”命名，后跟照片拍摄的时间和日期。（即 ./2015/02-February/User1-2015-02-07_16:37:52.jpg），型号 P999 和 User2 也是如此。
不幸的是（或者幸运的是），User1 和 User2 都拥有相同的智能手机，所以我无法再根据相机型号进行排序，因为它们都是 SGH-I747M！
问题：
是否有其他方法可以使用 exif 元数据或其他方式来区分同一品牌和型号的智能手机？
我对以下 exif 标签很好奇。也许其中某处会有一个唯一标识符：
exif:MakerNote: 7, 0, 1, 0, 7, 0, 4, 0, 0, 0, 48, 49, 48, 48, 2, 0, 4, 0, 1, 0, 0, 0, 0, 32, 1, 0, 12, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 16, 0, 5, 0, 1, 0, 0, 0, 90, 0, 0, 0, 64, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 80, 0, 4, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
exif:UserComment: 65, 83, 67, 73, 73, 0, 0, 0, 0, 0, 0, 0, 232, 3, 0, 0, 53, 0, 0, 0, 15, 0, 0, 0, 0, 0, 52, 18, 120, 86, 52, 18, 120, 86, 52, 18, 120, 86, 52, 18, 0, 0, 0, 0, 0, 0, 3, 0, 96, 0, 38, 59, 49, 0, 232, 4, 36, 6, 0, 0, 11, 0, 0, 0, 255, 255, 185, 212, 19, 0, 0, 0, 0, 0, 132, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 253, 253, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 67, 0, 65, 0, 76, 0, 80, 72, 70, 74, 48, 50, 0, 0, 0, 0, 67, 117, 114, 46, 80, 72, 70, 74, 48, 50, 67, 77, 76, 0, 48, 49, 56, 48, 48, 49, 48, 48, 49, 53, 48, 57, 48, 48, 50, 57, 48, 49, 48, 57, 48, 69, 53, 67, 48, 49, 48, 68, 48, 49, 49, 54, 48, 49, 49, 54, 48, 57, 54, 55, 19, 239, 5, 0, 55, 54, 0, 1, 18, 235, 38, 0, 0, 3, 0, 0, 0, 0, 84, 0, 85, 0, 78, 0, 65, 0, 2, 0, 208, 2, 232, 3, 80, 6, 207, 5, 207, 0, 16, 8, 1, 0, 0, 0, 1, 0, 254, 17, 2, 0, 64, 174, 1, 0, 193, 93, 255, 255, 255, 243, 255, 255, 145, 199, 255, 255, 22, 47, 1, 0, 89, 9, 0, 0, 145, 15, 0, 0, 32, 5, 255, 255, 79, 235, 1, 0, 0, 0, 70, 76, 70, 76, 2, 0, 83, 86, 78, 35, 22, 1, 103, 9, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 174, 0, 0, 0, 0, 0, 208, 2, 232, 3, 80, 6, 104, 5, 207, 0, 92, 0, 104, 5, 9, 21, 1, 0, 68, 9, 65, 9, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 78, 100, 77, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 74, 0, 14, 0, 70, 0, 0, 0, 63, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 243, 1, 247, 255, 13, 1, 9, 1, 2, 1, 254, 0, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 74, 75, 74, 75, 92, 14, 60, 249, 0, 0, 53, 255, 0, 0, 226, 148, 0, 0, 168, 146, 0, 0, 163, 145, 1, 0, 0, 0, 1, 0, 100, 88, 1, 0, 1, 0, 0, 0, 0, 232, 3, 0, 0, 80, 6, 0, 0, 207, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 131, 137, 1, 0, 0, 0, 1, 0, 197, 84, 1, 0, 16, 8, 1, 0, 0, 0, 1, 0, 254, 17, 2, 0, 64, 174, 1, 0, 193, 93, 255, 255, 255, 243, 255, 255, 145, 199, 255, 255, 22, 47, 1, 0, 89, 9, 0, 0, 145, 15, 0, 0, 32, 5, 255, 255, 79, 235, 1, 0, 74, 75, 74, 75, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0, 129, 153, 9, 0
signature: f7359044760a12573c150b440ad2537ba848fb4ee795e51a36b1786d368421b9