I've recently got quite excited by photographs that have been geotagged with location information. This is an example of EXIF file header which can be found in files. I have highlighted the GPS location information which is stored by the Apple iPhone 3G.

ExifTool is useful tool. It is essentially a file editor that enables this information to be modified.

 

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ExifTool Version Number	7.41
File Name	jamboree-small.jpg
Directory	/Users/jonathan/Desktop
File Size	28 kB
File Modification Date/Time	2008:08:30 23:54:50
File Type	JPEG
MIME Type	image/jpeg
JFIF Version	1.01
Exif Byte Order	Big-endian (Motorola, MM)
Make	Apple
Camera Model Name	iPhone
Orientation	Horizontal (normal)
X Resolution	72
Y Resolution	72
Resolution Unit	inches
Modify Date	2008:08:01 20:21:27
F Number	2.8
Date/Time Original	2008:08:01 20:21:27
Create Date	2008:08:01 20:21:27
Color Space	Uncalibrated
Exif Image Width	360
Exif Image Height	263
Gamma	2.2
GPS Latitude Ref	North
GPS Longitude Ref	West
Compression	JPEG (old-style)
Thumbnail Offset	191
Thumbnail Length	5904
Date/Time Digitized	2008:08:01 20:21:27+00:00
Profile CMM Type	ADBE
Profile Version	2.1.0
Profile Class	Display Device Profile
Color Space Data	RGB
Profile Connection Space	XYZ
Profile Date Time	2000:08:11 19:51:59
Profile File Signature	acsp
Primary Platform	Apple Computer Inc.
CMM Flags	Not Embedded, Independent
Device Manufacturer	none
Device Model
Device Attributes	Reflective, Glossy, Positive, Color
Rendering Intent	Perceptual
Connection Space Illuminant	0.9642 1 0.82491
Profile Creator	ADBE
Profile ID	0
Profile Copyright	Copyright 2000 Adobe Systems Incorporated
Profile Description	Adobe RGB (1998)
Media White Point	0.95045 1 1.08905
Media Black Point	0 0 0
Red Tone Reproduction Curve	(Binary data 14 bytes, use -b option to extract)
Green Tone Reproduction Curve	(Binary data 14 bytes, use -b option to extract)
Blue Tone Reproduction Curve	(Binary data 14 bytes, use -b option to extract)
Red Matrix Column	0.60974 0.31111 0.01947
Green Matrix Column	0.20528 0.62567 0.06087
Blue Matrix Column	0.14919 0.06322 0.74457
Image Width	360
Image Height	263
Encoding Process	Baseline DCT, Huffman coding
Bits Per Sample	8
Color Components	3
Y Cb Cr Sub Sampling	YCbCr4:2:2 (2 1)
Aperture	2.8
GPS Latitude	51 deg 51' 18.00" N
GPS Longitude	1 deg 14' 32.40" W
GPS Position	51 deg 51' 18.00" N, 1 deg 14' 32.40" W
Image Size	360x263
Thumbnail Image	(Binary data 5904 bytes, use -b option to extract)

 

I've been nothing short of impressed by the little Apple Mac Mini that I've used to host my websites over the past two years. In that time, it's been 100% reliable and apart from the occasional software update, has not needed a restart. The Mac Mini, Barney, has been co-located at a hosting company in Brighton called Freedom255, who do an awesome job ensuring optimal uptime for all their servers.

Barney's spec is reasonably modest, a 1.42GHz G4 processor, 1Gb memory and an 80Gb hard disk. It ran Mac OS X Server 10.4, running Apache 1.3, MySQL databases and SMTP mail services. It ran numerous websites, from the local Scout troop, Orion Online, some pupil blog sites and my own blog site, Jonathan's Blog.

Over time, as the number of web visitors mounted, the Mac Mini had reached its operating capacity and processor occupancy regularly reached 100%, falling to around 70 or 80% in quieter moments. It wasn't until Barney was upgraded to a dual processor G5 Xserve and looking at the webserver stats pages, that it became obvious that the Mac Mini wasn't meeting the demand placed upon it. I had anticipated that the standard 2.5" laptop hard disk would be the first to fail. Laptop hard disks, although built to be robust, aren't built to the same specification as hard disks in servers. No such problems arose.

I'm nothing short of impressed by what the Mac Mini has achieved and it's now clear why the popularity of placing these machines in colocation facilities has grown. They make excellent personal servers, which are very capable of serving 150,000 pages per day.

Now in retirement, the Mac Mini enjoys a quieter life as a development machine, probably still having fond memories of its earlier life as a proper workhorse server. 

If you're looking for a server host company, or colocation facility, I'd strongly recommend Freedom255.

I carry a little folded up piece of paper in my wallet of the London Underground tube map to help me find my way around the Tube network. It's also helpful to have a map to refer to when there are delays and cancellations on the tube network, and that's more usual than not - or maybe it just seems that way.

I found an underground map for the Apple iPhone, which has been specifically designed for the iPhone's screen size. A single jpg image doesn't work because when the image is optimised for the iPhone, the size and quality of the image is reduced, meaning station names can't be read.

How to use and install on the Apple iPhone

1. Download the underground tube network files from this site.
2. Import the archive contents into iPhoto.
3. Create a new album called something you can remember, such as "Underground" and drag the photos into the folder
4. Set your iPhone to sync with that album via iTunes.
5. Navigate to your Photos on the iPhone and the album name you created. Simply scroll between each section of the tube network map.

I've also installed a WebApp which shows the current status of the Underground Network.

The Register recently posted...

Most iPhone owners probably just chucked the handset's box in the bin seconds after leaving the shop. Not designer Scot Hampton - instead, he turned Apple's packaging into a 35mm film camera.

erm, not me - I love the way Apple package their products, so I tend to keep the boxes declaring them just too beautiful to throw away. In fact their boxes are just as pretty as the kit inside them!

 

If you think this is just a mock up image, read more to find out that Scott has actually put the components of a film camera inside. Incredible. 

 

I've been running a mobile blog site for a long time now (since 2006), and although my main blog has been rather quiet over the past few weeks, I've found time to reflect on some recent activities using my new iPhone. In the past, I have used the Sony Ericsson software on the handset to send photos captured by the mobile phone's camera straight to a Blogger.com site.

Clearly this software wasn't available on the iPhone, but as with all sites that have a programmable API, there are plenty of other routes for creating blogs, many of them not new of course. Email to webpage technology allows web content to be authored within an email client and then published by sending an email which is read by the server and published. It's a really neat solution and although it has been around for at least the last 6 years it hasn't, for me, had a use until now.

The iPhone has a great web browser, and handles forms really well, so it's great for posting to any website. However, it won't allow you to upload photos because of the restrictions to being able to access the file system (with the exception of hacked iPhones.) The iPhone also has a great email client, which overcomes the problem of uploading images to a blog site.

Using Blogger.com's email to blog option, I can take pictures on the iPhone, choose the Email Photo option and send it to a private address that only I know about, but one which Blogger.com receives and then publishes as a blog entry. A perfect solution, and quick too. Here are some of my most recent entries, all taken with an iPhone and blogged straight to Blogger.com using Mail.

Of course, it's not just Blogger.com that enables this technology as Flickr does this too, see my iPhone pictures on Flickr, in fact, you can see everyone elses iPhone pictures on Flickr.

Flickr will also publish your photos and accompanying annotation to most popular blog sites, or to any blog that supports xmlrpc, such as WordPress, Drupal, Movable Type.

For those of you who have a TypePad blog, the developers of TypePad have already created an iPhone interface.