- [ ] Stock you pantry/freezer with some food that keeps so you have something to eat when you get home (that doesn't rely on shops/restaurants being open).
When using ATMs/Cash Machines/Bankomaten/Geldautomaten give them a good wiggle before inserting your card. During 32C3 a Skimmer device had been found at an ATM at Bahnhof Dammtor. This is just a reminder, you should do that every time you use your card.
- [x] At least ONE clean shirt for each day you stay, plus two for traveling to and from congress (nerdy print is always welcome)
- [x] At least ONE set of clean underwear for each day you stay, plus two for traveling to and from congress (Doesn't necessarily need to be in matching pairs, but that is up to you.)
- [x] At least ONE pair of clean socks/stockings/tights/overknees for each day you stay, plus two for traveling to and from congress (again, matching pairs optional)
- [x] Enough pants/skirts/trousers/dresses/etc. so you can wear clean clothes every day you attend congress (even if somebody accidentally (or intentionally) spills a beverage all over you!)
- [x] 3x to 10x multi-plug power extension (230V AC @50Hz) with [Schuko Plug][6] (and optional switch, hotel rooms usually suffer from severe lack of outlets)
- [x] Chargers for all those phones, or at least matching cables if you can charge over USB.
- [x] A portable battery pack (aka powerbank) so you can charge on the go. (And the necessary cable to recharge that battery pack overnight. A USB-A to micro USB cable in most cases, maybe already a USB-C cable as well.)
- [ ] Headphones (Closed type) (so you don't have to talk/listen to other carbon units while traveling)
- [ ] Soldering iron
- [ ] solder
- [ ] solder pump
- [ ] flux
- [ ] Duct tape or gaffer tape (vital)
- [ ] Easy snacks such as nuts or granola bars (Events like these are often hectic and sometimes it's easy to forget to eat. If you need food to take medications, make sure to always have snacks with you)
It is not recommended to connect your smartphone to the congress wifi -- [ ] if you still can't resist, here are a few things to consider:
- [ ] Make sure that it's **not a 802.11b** device, as it would slow down the complete wifi network.
- [ ] Disable all synchronization services, as they might be using plaintext.
- [ ] Disable all auto-discovery services (network music players, remote control apps, etc …).
- [ ] Make sure there are no known exploits for your device (not that unknown-to-you exploits wouldn't be a possible risk as well…).
- [ ] Turn off push notifications.
- [ ] Update your apps, especially your browser.
- [ ] Use a VPN tunnel if possible.
- [ ] Use a Firewall and only allow the (few) services you trust.
- [ ] [DroidWall][22] for Android (root required)
- [ ] If you don't have a VPN tunnel available, you can use [OnionBrowser][7] (iOS) or [Orbot][orbot] (Android) to surf via Tor (which may be its own kind of risk).
- [ ] Set your GSM network selection to **manual** or you might end up connected to a rogue GSM network.