What's your favourite piece of technology, and how has it improved your life?
I have become completely obsessed with my iPhone. Before I acquired this about two months ago I had the oldest, saddest cellphone you've ever seen – it was kind of a life-changer. I'm totally in love with it, it's like a member of my family.

When was the last time you used it, and what for?
Well it's hard to keep my hands off it. I try to when I'm travelling, because it's so expensive to use it. But I last used it last night updating my Facebook status.

What additional features would you add if you could?
I am a little jealous that a friend of mine has an actual vocal instruction GPS map system on her phone. I do love the maps feature though.

Do you think it will be obsolete in 10 years' time?
Of course – 10 years? That's like eons in tech time. We'll all have little microchips in our heads and we'll be thinking each others thoughts instead of phoning.

What always frustrates you about technology in general?
Probably the scary, not quite real or trustworthy nature of storing things in bits and bytes. I shot a quick, short film last week and lost half the footage because I stored it to card instead of tape. I always wonder if I'm going to have enough backups of my backups.

Is there any particular piece of technology that you have owned and hated?
I remember back in the days of when people were still trying to figure out data storage, and there was a lot of removable data storage. I still have all of these things stored on obsolete formats – zip drives and so on. There was a device called the Psyquest drive. And there were optical storage drives.

If you had one tip about getting the best out of new technology, what would it be?
What I always do if I'm trying to work out how to use a new piece of technology is to make friends with geeks – have one great computer geek in your life. It saves a lot of time.

Do you consider yourself to be a luddite or a nerd?
Somewhere in between. It would be much more useful if I were a real nerd, but I'm not quite there – thus, geeks are my friends.

What's the most expensive piece of technology you've ever owned?
Probably my laptop – my Mac Powerbook.

Mac or PC, and why?
Mac, completely – because I'm a filmmaker and love Final Cut Pro. But even beyond that I'm a sucker for their design. And I find the way they interact quite comforting – I hate Windows.

Do you still buy physical media such as CDs and DVDs, or do you download? What was your last purchase?
I never really bought DVDs, I always rented those. But I always had a soft spot for independent music stores. So I do download music, but I do sometimes like to go and buy a CD. I think the last DVD I bought was The Guatamalan Handshake, by Todd Rohal.

Robot butlers – a good idea or not?
An excellent idea. In my head, anyway – I don't know about the real ones.

What piece of technology would you most like to own?
Probably a device that would sleep for me, like a mobile sleep bank. So I could stay up all night, and still get up at 7am and think clearly.

• Lynn Shelton's latest film, Humpday, is now on release across the UK