The northlondonhippy

This is a lit­tle warn­ing from your friendly, neigh­bour hippy.

Do you tweet from your iPhone? Are you broad­cast­ing your loca­tion with every tweet when you are at home? Do you know what I am talk­ing about?

If you answered “yes” to any of those ques­tions, espe­cially that last one, you really need to pay atten­tion to this.

Your iPhone is location-aware, so to an extent is your iPod touch. You prob­a­bly know this already. It means it can work out your loca­tion using GPS, wi-fi and/or cell phone tower infor­ma­tion to a rea­son­ably accu­rate degree. That fea­ture is built right into the core archi­tec­ture of your iPhone.

Hav­ing that infor­ma­tion at the core, means appli­ca­tions like many iPhone Twit­ter clients, can mag­i­cally grab your exact loca­tion (expressed in lat­i­tude and lon­gi­tude) and attach it to your tweets and Twit­ter account.

If you look at people’s Twit­ter pro­files, occa­sion­ally you will see two sets of num­bers where their city would nor­mally be…if you cut and paste those num­bers into Google Maps, it shows you their exact location.

Per­haps there are times when you want to broad­cast your loca­tion, for exam­ple, you are vis­it­ing a famous land­mark and want your tweets to reflect that. Or maybe you are out on a Sat­ur­day night and you want your friends to eas­ily be able to find you, because its your round. That’s all cool.

But what if you are at home, mer­rily tweet­ing away about your two-week hol­i­day abroad that starts tomor­row and you’re not aware you’re send­ing out your home address with every mes­sage? Sup­pose you have a photo of your­self on your account, or hun­dreds of them on your linked Face­book page.

What would it take for some enter­pris­ing crim­i­nal to park up on your street and watch for you to leave, know­ing your flat will be empty for a fortnight?

Very lit­tle.

Think I’m being para­noid? Think again, because some­thing like this hap­pened recently in Ari­zona. Here, check out this local report.

So what can you do to avoid this hap­pen­ing to you?

Sim­ple, become more aware of loca­tion awareness.

If you tweet from your iPhone (or iPod Touch, or any other loca­tion aware device, if one exists), go into the set­tings of your pre­ferred Twit­ter client and turn off loca­tion ser­vices. The set­ting is some­place dif­fer­ent in every app, and if you can’t find it in the app, look on the main set­tings sec­tion from your home screen.

When the app asks you to turn them on again, like it did the first time you used the app, say “no”, unless you want to broad­cast your loca­tion. And if you are home, or where you work, this should prob­a­bly always be “no”.

You can re-enable this fea­ture if you do want to use it, when you are out and about, but I really rec­om­mend keep­ing it switched off as your default setting.

Also, check your own Twit­ter pro­file, to see what you have listed as your loca­tion. You might dis­cover a lit­tle surprise.

If you wish to change it, log into your account from the web and go to Set­tings, then find the lit­tle box for loca­tion and type some­thing suit­ably vague. Mine says: “north Lon­don, UK, Earth”, in case any­one con­fuses it with the Venu­sian version.

There’s one more sim­ple thing you can do to pro­tect your­self, when you send tweets, don’t give out too many spe­cific track-able, real-world details about yourself.

I realise if you are tweet­ing under your own name, and can be found by direc­tory enquiries or (gasp) in the white pages, it may already be too late, but if you are at all pri­vacy minded, nei­ther of those things will be true of you. They are cer­tainly not true of me, but I am extremely pro­tec­tive of my pri­vacy online and off.

If you’re some­one who didn’t realise you’ve been prac­ti­cally attach­ing your home address to every tweet sent from your iPhone, this advice is espe­cially for you. Just send me what you saved in the increase to your home con­tents insur­ance post-burglary and we’ll call it even.

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