The iPad and iPhone are amazing pieces of technology. They allow us to achieve essentially anything we wish within the virtual world: from making magazine pages jump out at you to watching movies; planning future housing developments through to taking full control over our financial future.

Despite this, there are a few things you shouldn't really use either the iPad or iPhone for. Here we've highlighted ten such things, but we go a little further to show ways you could use your favourite piece of technology if you should really wish to.

The outcome, obviously, is one you take at your own risk.

1. You should never use your iPad or iPhone in the shower

It's a simple enough story: you're reading your favourite magazine through Newsstand on the iPad but suddenly remember you need to get ready for your evening out. The article, however, is proving to be more of a draw than the idea of going out. Alternatively you're watching a movie on Netflix or Lovefilm Instant, and really don't want to stop just to have a shower. What can you do?

You could consider buying a waterproof case for the iPad. The Lifedge waterproof case (£99, www.lifedge.co.uk) is 100% waterproof and shockproof; includes an anti-glare screen for sunlight viewing; does not restrict the functionality of touchscreen, Wi-Fi or the cameras; it's a compact case for everyday protection; offers exceptional sound transmission and has a comfortable handstrap to allow easy use.

Obviously when trusting your £400 iPad to a £100 case, you're taking some risks: but to watch movies or read in the shower/bath it may just be ideal.

2. You should never follow Maps when walking down the street during the night

There are two ways to look at your iPhone. The first is to see it as a capable device with connectivity to the internet that is able to direct you from point A to B without fuss. The other way; the way a person about to rob you would view it; is £500 worth of something that's very easy to sell. If you're lost it may seem a good idea to get out your phone and use Maps to guide you home; but it's a bit of a risk if you're by yourself.

Instead, why not go to a cafe or restaurant that is still open; sit down and order a drink. Get out your phone, in a public place with a lot of company, and put into it your home address. Before you leave put it into your pocket and follow the turn-by-turn audio navigation to get you all the way home.

If Maps does not offer everything you need, take a look at NavFree - the free SatNav app - which will also give you all the directions you need to get home.

3. You should never ask Siri the meaning of life

You can do if you wish, but asking Siri the meaning of life is opening the door to all manner of answers.

The first, and by far most frequent, is 42. 42 is the answer given in the Hitchhikers Guide to the Galaxy from the supercomputer built by scientists which spends seven and a half million years calculating the answer. It's a bit of an anticlimax after seven and a half million years really.

There are other possible answers:

- Try and be nice to people. Avoid eating fat. Read a good book every now and then, get some walking in and try to live together in peace and harmony with people of all creeds and nations.

- I can't answer that right now, but give me some very long time to write a play in which nothing happens

- Life: a principle or force that is considered to underly the distinct quality of animate beings. I guess that includes me.

- Life: The condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity and continual cnage, preceding death.

- To think about questions like this

- I don't know. But I think there's an app for that.

4. You should never wear an iPad shirt/necklace

There's no denying that the iPad and iPhone just ooze cool. They are both style icons; just being seen with one makes you look cool to the world around you. It's not a coincidence, therefore, that a significant number of people will have either an iPad, iPhone or both in any given situation.

So how can you express your stylish nature and let the world know how just plain amazing you are?

Syte Gear offer, here (http://www.syteshirt.com/shop/10-syte-shirt/), a shirt that features a see-through slot on the front of it into which you can slide an iPad. Priced at $49.95, it allows you to show off your designs, apps, promotions and so on - and we do have to admit it seems like quite a nice idea.

Until you forget that you're walking down the street in it and you have your iPad literally strapped to the front of your body showing the world your personal posessions. It's never a good idea to advertise to all and sundry that you have such an expensive piece of tech on you as it's an advert to get mugged. Or worse, somebody may swap your iPad for an Android tablet.

5. You should never use an iPad as a hat

While it's true that newspapers are increasingly being read on tablets instead of in print; you can't effectively use an iPad to protect you from the rain whereas a newspaper could be used rather well to do so.

I mean, let's be honest. Tablets require electricity; if water gets into tablets then tablets don't work anymore because water does bad things to them.

Fairly simple really.

The answer is easy enough. If it starts raining and you don't have a newspaper, grab the nearest free copy of The Metro or The Evening Standard and use it to protect yourself from the rain.

Job done.

6. You should never install Android on your iPhone

The App Store is truly amazing; with thousands of apps released every month to suit the needs of every iPhone, iPad and iPod touch user itching to install new software on their favourite device.

But what if you reach the point where you've simply had enough of iOS. You have the desire to change, to move onto something else, to experiment if you will. Why not take a look at installing Android on your iPhone.

Without question, this will invalidate your warranty. It will also work only on a first-gen iPhone or an iPhone 3G with firmware between 2.0 and 3.1.2; that is jailbroken. You will also need a few things - our sister magazine PC World details the full procedure here (http://www.pcworld.com/article/196595/how_to_install_android_on_your_iphone.html).

7. You should never have your iPad or iPhone repaired by somebody other than Apple

Actually this is one that needs some clarification.

If your iPad or iPhone is covered by an AppleCare warranty, talk to Apple first before you involve anybody else in repairing your device. The reason is quite simple: the second anybody other than Apple take apart your device, the warranty is not worth the paper it's printed on. When the case is opened, the warranty is gone - there is no question about that.

However if my iPad 2 needed a new screen, and Apple's scheme pricing of around £250 to replace the iPad (note not repair the screen - replace the iPad) seemed rather steep i'd look at a company like Fix My iPhone (www.fixmyiphone.co.uk) who instead will charge £125 to replace the glass; test it then return it.

They can also repair iPhone 4/4S screens for around £99; or iPod touch screens from £70.

8. You should never take your iPad or iPhone into the sea

There is a story we once heard about somebody who, while on holiday in Tenerife, forgot that they had their work mobile phone in their pocket while getting into a pedal boat. The water, while initially upto the knees, ended up going up to the waste soaking everything which was in both of their trouser pockets; including an Android phone.

Water is, as we said earlier, a problem.

Salt water can be a big problem.

Apple's AppleCare+ warranty covers liquid damage; and would quickly bring back a working handset. Of course, following Apple's usual methods of working what you get back won't necessary be the same phone you sent: it could be an alternative handset.

Over at imore (http://www.imore.com/have-liquid-damaged-iphone-ipad-or-ipod-heres-what-you-should-and-shouldt-do-it) Alison Kazmucha has summarised some of the things you should and shouldn't do with a water-damaged iPhone, iPad or iPad.

Mobile Ease (http://www.mobileease.co.uk/products.php?product=iPhone-%28All-Models%29-Water-Damage-Diagnosis&gclid=CL6_gInSh7QCFXHLtAodbywAtA) offer a service to diagnose the extent of water damage; then to carry out the repair; and if they can power it up you get to keep all of the data.

9. You should never share your iPad screen display late at night

With the iPad it's easy to mirror your screen display either to Apple TV; so as to share your on-screen entertainment with a larger room or through a Mac using an app such as Reflection (www.reflectionapp.com).

The thing about this is if you decide to go to bed and take the iPad with you to read some personal emails or check out your Facebook acount before sleeping; you could possibly leave and still have the others within the house able to see everything you are doing courtesy of the AirPlay mirroring function.

So there's a simple choice here: either share your personal email and Facebook messages with the room, or turn off AirPlay mirroring before going to bed.

10. You should never control your car from the iPad or iPhone

As reported in the Sydney Morning Herald (http://www.smh.com.au/digital-life/cartech/ipad-you-can-drive-my-car-20110811-1inqx.html) on August 11th last year, EDay Life was planning to have a trial shipment of electric cars on the roads of Melbourne earlier this year.

Curve Tomorrow has, in conjunction with EDay Life, developed a software package that turns the iPad into a car's controller and rather more besides.

The potential here is impressive.

Whereas the article discusses starting the climate control by tapping the iPad before getting into the car; this could easily be the first step towards cars that can take you where you want to be, whenever you wish to be there.

An integrated Siri-Maps hybrid could be asked to plot the quickest route between point A and B (while in the background checking the traffic/weather reports to see anything that may influence the speed of your journey); while using detectors around the car to judge the distance between cars to ensure that you don't hit anything.

Then with a little more than a 'Drive, Jeeves' (assuming the car has been named Jeeves) you could be taken home.

At the moment, we'd suggest entrusting Maps to find a location then following the directions yourself.