필자는 최근 아이팟 터치 3세대를 탈옥해서 쓰고 있다. 탈옥이 뭔지 궁금한 분들과 탈옥을 하고 싶은 분들을 위하여 탈옥 개념을 간단하게 설명하고 탈옥 방법 자료를 링크하였으니 도움이 되는 자료이면 한다. 탈옥의 장단점에 대해서는 잘 정리된 글이 있으니 역시 참고하도록.

탈옥이란 무엇인가요?

탈옥 (jailbreaking)이란 아이폰, 아이팟, 아이패드 등 iOS를 사용하는 기기에 걸린 권한 제한을 풀어서 애플이 금지하고 있는 영역까지 바꿀 수 있도록 하는 것이다. 예를 들어 탈옥을 하면 iOS의 키보드 배치를 바꾼다거나, 기본 앱의 기능을 확장한다거나, 테마를 바꾸어서 iOS의 모습을 바꿀 수 있다.

또한, 탈옥을 하면 애플에서 정식 인정받지 않은 제3자 앱도 설치할 수 있다. 본래 iOS 기기는 앱스토에 있는 애플 공식 앱만 구입하거나 무료로 받을 수 있지만, 탈옥한 기기는 시디아 (Cydia) 등을 통해서 애플이 금지하는 앱도 설치할 수 있다.

탈옥은 뭐하러 하나요?

탈옥은 애플에서 변경을 금지하는 시스템적인 부분을 바꾸고 싶을 때 한다. 필자는 기본 키보드 배치가 마음에 들지 않아서 그 부분을 바꿔보고 싶었는데, 앱스토어에 키보드 앱이 있기는 하지만 시스템상 제약 때문에 그 앱 내에서만 해당 키보드를 사용할 수 있는 제한이 있다. 필자는 탈옥한 후 EightKeys라는 앱으로 iOS의 키보드 배치를 변경해서 어느 앱에서든 새 키보드를 사용할 수 있게 되었다.



애플에서 또 금지하는 게 iOS의 모습을 바꾸는 것인데, 탈옥 후 Picnic이라는 테마를 설치해서 완전히 바꿔버렸다.


이런 것이 탈옥의 효용이다. 애플에서 금지하는 권한이 필요없다면 당연히 탈옥은 할 필요가 없다. 그건 개별적으로 판단하면 된다.

탈옥을 해도 기존 앱을 사용할 수 있나요?

탈옥을 해도 기존 앱은 모두 문제 없이 동작하며, 똑같이 앱스토어와 아이튠스를 사용할 수 있다. 거기에 더해 시디아에 올라온 앱 등 애플이 허락하지 않는 앱을 깔 수 있게 되었다는 차이이다. 탈옥만으로 기기에 큰 변화가 오는 것은 아니며, 변화를 줄 수 있는 가능성이 생긴 것이다.

안정성이나 보안에 문제는 없나요?

하드웨어나 iOS를 변화시키는 것이 아니므로 정상적으로 진행된다면 기기가 고장날 일은 없다. 혹시 뭔가 잘못되었다면 아이튠즈에 접속해 원래대로 복원하면 된다.

탈옥 자체만으로 고장이 나거나 보안에 문제가 생기지는 않지만, 시디아 등지의 제3자 앱은 애플에서 확인한 것이 아니므로 프로그램 충돌이나 보안 취약을 유발하는 것이 없다고는 할 수 없다. 특히 OpenSSH 앱은 외부 접속을 가능하게 해주므로 보안 문제가 생길 수 있다. 따라서 제3자 앱에 대해 소비자로서 어느 정도 주의를 기울여야 한다. 필자 본인은 별 문제는 없이 탈옥 아이팟을 사용하고 있다.

AS 받는 데 지장은 없나요?

탈옥의 장, 단정을 다룬 글에 따르면 탈옥폰은 AS를 받아주지 않는다고 한다. 따라서 AS를 받으려면 아이튠즈에 접속해서 백업본으로 탈옥 전 상태로 복원한 후 서비스 센터에 가져가야 할 듯하다. 나중에 재탈옥을 하려고 한다면 귀찮은 일이지만, 복원만 하면 서비스 센터에서 이게 탈옥을 했던 기기인지 알 방법은 없다.

탈옥은 어떻게 하나요?

여러 가지 방법이 있지만, 그린포이즌을 사용하는 방법이 대중적이다. 기기를 컴퓨터에 연결하고 아이튠즈로 백업한 후 그린포이즌을 실행해서 화면에 나오는 대로 슬립 버튼과 홈 버튼을 조작하면 된다. 그렇게 23초 정도 하면 그린포이즌이 알아서 탈옥을 시작하고 기기를 재부팅할 것이다. 기기가 다시 켜지면 시디아를 설치하고 테마와 앱 등을 받을 수 있다. 라이프해커 (영문)에서 iOS 버전별로 설명을 하고 있으므로 참조해보기 바란다.

Those of you who use Mark Forster's Do It Tomorrow system of time management may be looking for a good app to bring DIT to the  iPhone or iPod Touch. Others may be using an app already, but find it lacking for their needs and the specific contours of the DIT system. Perhaps some are considering a move to DIT, but wonder if there is good software support on their iPhone or iPod.

For the free-time-challenged, below is a rundown of the good and bad points of using DIT on Momo Notes.

The Good:
Tasks can be scheduled and rescheduled by editing the date and time
Smart lists allow you to view pre-scheduled tasks by day or week
Tags allow the tracking of tasks by projects and categories
Tags also facilitate diagnosis of task completion and backlogs

The Bad:
Scheduling repeated tasks can get, well, repetitive
Scheduling each and every task takes time and energy
Momo is at base a notes app, not a scheduling app

Still interested? Follow the more detailed discussion below.

The details of Do It Tomorrow are outside the scope of this post, and for a full explanation you will want to read Forster's book, information on which you can find through the link at the top of the page. Here, for the sake of clarity, I will only provide the most basic information on DIT.

The basics of the system consist of daily to do lists, which Forster calls will do lists because everything on the list should be done that day. The tasks on the daily will do list are also the only things that should be done that day. Anything new that comes up during the day, unless it's an actual emergency, goes on the next day's will do list,; hence the title. Forster advocates this method as a way to organize work without the chaos and stress of trying to deal with an endlessly expanding workload.

I've found the system makes sense for me, and was using a paper planner to implement it when I bought an iPod Touch to listen to audiobooks. I quickly discovered its other uses, including taking notes. Hooked on jotting  down passing thoughts and maintaining a list of books I wanted to check out, I wanted a more powerful memo-taking app and unwittingly downloaded what, in my opinion, is the killer app for Do It Tomorrow on the iPhone and iPod Touch.

Momo Notes for the iPhone/iPod Touch is a simple yet full-featured note-taking app from developer MK HQ. In addition to the usual tag and synchronization functionalities (the latter through the momolog website, which offers very quick synch), Momo also offers smart lists and the ability to change the date of a note.

Smart lists work much like smart playlists on iTunes, a rules-based filter providing a dynamically updated list. Just as one can specify tracks rated higher than four stars and/or purchased within the last week for a smart playlist, a smart list can have conditions like notes tagged "urgent" and "MK HQ account" that were created within the past two days. Such a smart list might be named #MKurgent. There are quite a few rules available for the creation of of these lists, one of Momo's best features.

By now the reader may have an inkling of how Momo Notes works to implement DIT on the iPhone/iPod. Let me illustrate further with an example and pictures.

Let's say I have a number of tasks I need to do. I need to drop my worn shoes off to get the soles replaced, catch up on four issues of magazines that piled up in my mailbox, and write up a proposal. I fire up Momo Notes on my iTouch...

And write each task up as a separate note. (This makes the management of tasks more modular, as we will shortly see..) I tag each task/note appropriately, maybe "shoes," "fashion," "repairs," or "errand" or some combination of those for dropping off the shoes. Obviously the tags can be as detailed or as general as one's needs dictate and can come in handy for review, as we will see later. The task is also tagged "willdo," my tag for everything that goes on a daily will-do list.

Some tasks, like the backlogged magazines, are similar repeated tasks. I might decide to read one issue a day and maybe take special notes of Issue 267 because it pertains to my line of work. Again, each task is a separate note, tagged willdo plus relevant tags such as perhaps "magazines," "currentevents," and maybe "backlog," if you want to track backlogs for diagnostic purposes.

The proposal project probably needs to be broken up into different tasks, such as "Call Khalil re budget for kce event," "Write outline for event proposal," "Write opening for event proposal" and so on. In addition to the usual tags and the willdo tag, I tag every task in that project with an identifying project tag, such as "kceevent" and "kceproposal." Again, the tags are as detailed or simple as they need to be.

If these are all today's tasks, then I'm already set, but I may want to schedule some of these tasks on different days. For instance I might not want to read all four issues on the same day but read one a day for the next four days, or one every Monday. Momo makes this easy by letting the user edit not only the content but the date of the memo. I can choose to edit the note, tap the date, and simply switch the date of each task note to the day I will actually do the task. This is an advantage of treating each task as a separate note--each can be given a different date, and that date can be changed easily.

So now I have a set of tasks, whether independent or part of a larger project. They are all scheduled for the correct date. What next? In a given day or week, how do I survey my will-do lists and the tasks I decided to finish in that time?

This is where smart lists come in. They come with a number of possible options, including what tags to include, what tasks to exclude, and what dates to include or exclude. I simply customize two smart lists for today's will-do list and this week's will-do list.

For the #today smart list (the hash is not required, but it's a useful way to distinguish these lists from static tags), I set the rules that the tag is "willdo," and the date is today. I set the list to match all rules. For #thisweek it's much the same, except the date range is this week instead today. Depending on your needs you can do this month, this year etc., although I've found that a week is about the maximum I need. I'll explain the #unfinished tag shortly, though by this point you can pretty much guess what it's for and even what its rules look like.

Now that the smart lists are set up, I can touch the #today tag to get a list of tasks I allocated to today, and #thisweek to look at what my task load and schedule look like this week. Since Momo by default only shows the first line in the preview, I get a clean view of the main headings. Maybe I noted down details of the task, such as a phone number to call, in the body of the task note, in which case I can just touch the note to see the detail.

So what happens when the tasks are done? There are two main ways. The first is to simply erase the note--which is another advantage of having one task per one note. The second is to add a tag, such as "done." You might want to do the former for mundane tasks that won't need a review, and the latter for tasks whose completion you might want to keep track of. In the latter case, you might want to exclude notes tagged "done" from the #today and #thisweek smart lists (by setting "tag is not done") if you want to view only unfinished tasks. You could also set up separate smart lists for, say, tasks finished this day or this week.

What if I finish a day without going through my whole will do list? That's what the #unfinished smart tag is for. The rules are "Tag is willdo" and "Memo in the last 30 days." If you use the tagging method for managing finished tasks, you will also need to add a rule like "Tag is not done." This way you can keep track of unfinished tasks which you can reschedule, give up on, delegate (in which case keeping track of the delegation is another task) and so on.

Finally, I can track projects and diagnose time usage using the static tags. By touching "kceevent", for instance, I can see all the tasks relating to the KCE event, what I have to do for that event, and when I will work on them. I can also use tags like "errands" or "backlog" to help me diagnose how much time I spend on errands or how big a problem backlogs are. For the latter purpose, tagging tasks "done" may be preferable to erasing them. It all depends on what you need.

Of course, while Momo works quite well to implement the DIT system on the iPhone or iPod Touch, it is not perfect. For one thing, writing up and scheduling the tasks can be a monotonous (or is that momotonous?) task, especially if you have a lot of repetition for a number of days. If a note could be scheduled for a range of days, or could be easily duplicated and reused, Momo would dramatically improve its support of DIT. If it further came hooked to an alarm, system, I would not need another time management application as long as I lived.

For me, personally, these limitations are not serious. I don't schedule really repetitive tasks ("eat" "sleep" "check e-mail"), Forster's example in his book notwithstanding, and I rather like to spend the time thinking about when to perform a task and then doing the scheduling. It connects me to the task on some level, and makes the choice of doing the task and when to do it more meaningful to me.

Of course your mileage may vary, and it's important to recognize that Momo is in its present form a note-taking app (a usage I still use it avidly for), and not a full-fledged scheduling app. All these are important considerations in deciding whether or not it is the right app to implement DIT for you, according to your own needs and preferences.

Overall I've found the simple yet robust Momo Notes more than adequate as a Do It Tomorrow system scheduler. On the recommendation of my friend lhovamp, fellow Momo user who got me hooked on the app, I've provided my way of using DIT on Momo Notes. I hope this helps anyone who is searching for a good DIT app, and helps them make the best choice according to their needs and tastes. Any feedback, information, and suggestions are much appreciated.