- From: Moon-Sang Lee <sang0627.lee@samsung.com>
- Date: Tue, 02 Dec 2008 15:52:14 +0900
- To: public-geolocation@w3.org
- Message-id: <008f01c9544a$81fe2780$85fa7680$%lee@samsung.com>
Dear Geolocation WG members, Hello everybody. I've heard about this WG a few days ago, and briefly read the editor's draft. And I'd like to suggest to discuss about position logging. In accordance with position acquirement, can we log the acquired current position into a repository? A repository can be a local file in a portable device or it can be a remote server. If we extend the Gelocation API to log one's position, it can support many useful use cases and help application developers work easy. Here is our proposal for extending the current Geolocation API draft, if it's still open. [ Location Logging ] We think Geolocation API would be much better when it adopts logging facility. (i.e. It's different from caching one's position.) The use cases for this feature are as below. - Preventing the emergency situation Let's assume that a person is climbing a mountain on a weekend. A portable device which he carries in his bag or pocket traces the location of himself by using the local GPS or broadband network. If he enters into a dangerous area where he may lose his way, the device warns him that it's not safe to go further in that direction. In addition, his position is periodically recorded to the local device storage or delivered to a remote rescue server if he had configured the automatic logging. In this case, the device plays as a personal black-box, which can be used to rescue him in an emergency if his position is periodically delivered to a remote rescue server. Furthermore, he can upload his trace to his own blog while recommending his pleasant journey to his friends. - Asking emergency aid Let's assume that a person is entering an area where crime is rife in a dark rainy night. The portable device notifies him of such dangerous situation. But, he decides to go on since he is in a hurry for appointment. He turns on the soft-911 mode of his device to verify the location of the nearest police man and to let the policeman know his location for provision against emergencies. In case of emergency, he can easily manage the situation by sending the request for emergency aid to the nearest policeman who has been tracking his position. The track under the soft-911 mode is temporarily stored to a remote 911 server until he turns off the mode. For above use cases, it's necessary to store one's position for a while, and we need additional functionalities besides those in editor's draft. The required features are as below. - Whether to log : boolean flag (True/False) - Where to log : log repository (URL) - When to log : logging frequency (TimeInterval) Obviously, these features can be handled by application, but it's too complicated to control logging without these features. We think that our proposal would raise new kind of web service and proliferate storage backend of cloud-computing. interface PositionOptions { attribute boolean enableLog; /* added */ attribute string loggingURL; /* added */ attribute long interval; /* added */ attribute boolean enableHighAccuracy; attribute long timeout; attribute long maximumAge; }; Thanks for reading. With regards, Moon-Sang Lee & Min-Soo Koo
Received on Tuesday, 2 December 2008 09:41:04 UTC