Summary | Accounts | Backup | Encryption | Network | Location | Public Device |
References: General | Android | Border Crossings |
Cell Networks | iOS | macOS | Travel
Summary
- Mobile Devices are more vulnerable to loss, theft, hacking and inspection -- whether travelling internationally or just away from home for a few minutes.
- Many recommendations echo previous sections, but with an emphasis on mobility / travel:
- [1] Strong Passwords on all Devices; 2FA avail at destination?
- [1] Backups, especially Photos; portable drives?
- [1] Encryption, especially Passwords; border concerns?
- [1] Networks: secure Wi-Fi? use VPN?
- [1] Location: enable Find My xxx; disable other services?
- [1] Using Non-Personal Devices to access online accounts -- don't, or exercise extreme caution
- References
Accounts
- Consider not only laptops, tablets, phones, but also other smart mobile devices, e.g., camera, watch, wearables.
- Strong passwords are especially recommended for your mobile device -- in case it gets lost or stolen -- and for any important remote accounts that you need to access while traveling.
- [2] If using 2-factor authentication (or 2-step verification), check that phone/token can be used at destination, or bring backup codes -- or disable 2FA until back home.
Backup
- Backup data before leaving home
- During trip, backup new photos / info
- from camera / phone / tablet
- to cloud / other device
- Depending on network speed / cost / security, you may want to disable automatic cloud backup / sync.
- macOS:
System Preferences > iCloud
- iOS:
Settings > iCloud > Photos etc.
- Bring copies of travel info as .pdfs, e.g., scanned passports / driver's license, air/hotel confirmations, itinerary
- Tag portable items with address labels, add phone no. and/or email contact
- Bring any needed cables, chargers, adapters, plugs, spare batteries, battery pack
- Avoid "juice jacking" at public USB charging ports, which can also access data ! -- bring your own wall charger
Encryption
- Remove or encrypt sensitive info, esp. passwords; use a password manager
- Devices are increasingly subject to searches in luggage and at international borders
Network
- Access WiFi: securely -- WPA2 recommended
- Use a Virtual Private Network (VPN) if appropriate
- Check with carrier about voice / data plans if leaving US
- Avoid excessive charges by using "airplane mode" or disabling cell data on an app-by-app basis
- iOS:
Settings > Cellular Data > Use Cellular Data For:
- [2] Opt out of your cell carrier's "supercookies"
- "Unlike regular cookies, supercookies can't be blocked or deleted, because the carrier inserts these unique identifiers between the time a request for a page leaves your device and the time it's sent to the server"
Location
- Enable/test tracking service, e.g., Find My Mac/iPad/iPhone, in case device lost/stolen
- Be aware that your approximation physical location can be determined from your cell network, from geotagging in photos, or by apps that ask to track you -- or even from device MAC address when using Wi-Fi (though iOS 8 randomizes MAC address regularly)
- iOS:
Settings > Privacy > Location Services
- [2] iOS:
Settings > Bluetooth: off
-- if you want to disable iBeacon
When Traveling Without Your Device
- Best not to use public computers, e.g., cybercafe, hotel -- even if 'well-maintained' and privately location -- malware, keyloggers, etc.?
- If you need to login, uncheck 'remember me' or 'stay signed in'
- 2FA (2-factor authentication) can provide some protection your account, but changing your password later (from a secure system) is recommended
- Use private browsing; cleanup cookies, history, downloads that you've created and left behind
- Logout / Turn off
References
- {TCYOP-4: 156-165; TCYOP-3: 130-139; Cellular Data Considerations: Your SIM Card; Supercookies; Proximity-based Logins; Granting Apps Access Permission; Location Awareness; Photos and Videos; Mobile Backups; Privacy and International Travel}
- sections: Refs: Android; Border Crossings; Cell Networks; iOS; macOS; Travel
- see also: Web Browsing: Manage Data; Services: Location; Backups
- topics:
- Ethical.net: Smartphones; Mobile Apps
- HowStuffWorks: Can the government take away my laptop?
- REI: Solar Chargers and Portable Power
- Ten Items That Belong in Every Carry-On Bag airline travel; LH; 5/24/2022
- How to secure your phone before attending a protest Verge; 5/5/2022
- Steps to Simple Online Security: Maintain privacy at international borders and protests NYT; 4/22/2022
- Privacy myths busted: Protecting your mobile privacy is even harder than you think
settings alone aren't enough to secure your privacy,
but they're a lot more powerful with the right apps;
Use a PIN code to lock your phone
-- not fingerprints or facial recognition;
Disable location tracking; Turn off your mobile ad ID;
Check your apps and accounts; Sign out of all other devices;
Lock down your social media; Enable 2FA;
Check for leaky apps; Fail-safe: Nuke your phone remotely;
The real key to privacy: Add these five apps
1. Signal Private Messenger App; 2. Surfshark VPN;
3&4. Brave Browser and DuckDuckGo;
5. BitWarden password manager; CNet; 1/9/2022 - How to Safely Stay Connected When You Travel
By Foot: power banks, interactive maps;
By Bicycle: geolocation, fitness tracking;
By Car: data plans, WiFi, VPNs, maps;
By RV: mobile hot spots, camping;
By Plane: airline apps, TSA;
By Public Transportation: WiFi on train, buses;
Wired; 6/22/2021
Android
Border Crossings
- EFF (Electronic Frontier Foundation): Border Search Pocket Guide;
Digital Privacy at the U.S. Border: Protecting the Data On Your Devices and In the Cloud;
Surveillance Self-Defense - ACLU: Know Your Rights: What To Do When Encountering Law Enforcement At Airports And Other Ports Of Entry Into The U.S.
- Irish police to be given powers over passwords
with search warrant; BBC; 6/14/2021 - CBP Now Has a Massive Searchable Database for Devices Seized at the Border the US border agency will be able to sift through data extracted from travelers' laptops and cellphones for up to 75 years; MB; 8/24/2020
Cell Networks
- What is eSIM exactly? The feature, which is included on newer phones like the iPhone XR (and later) and some Android devices, eliminates the hassle of swapping out your physical SIM card for a foreign one. Instead, you keep your normal SIM card inside your phone and essentially activate a digital SIM card to access a foreign carrier’s service. Carriers offer eSIM in various forms: Some require installing an app to buy a data plan, while others require scanning a barcode to activate service; instructions: Apple, Google; foreign carriers offering eSIM support
- Come Home With Memories, Not a Shocking Phone Bill NYT; 1/5/2024
- Is 5G Available for You? Here's How to Find Out Wired; 12/31/2021
iOS
macOS
Travel
- Traveling? Beware of Unsecured Hotel Wi-Fi Networks OSXD; 7/28/2022
- GasBuddy Is a Privacy Nightmare. Here Are Other Ways to Find the Cheapest Gas.
Google Maps (or Waze); Geico’s gas search;
GasBuddy’s browser-based search; NYT; 3/9/2022 - Cybersecurity Safety Tips for Travelers AARP; 8/2/2021
- Airbnb's new speed test feature lets you check the Wi-Fi before you book
if owner tests and posts results; CNet; 7/29/2021 - Why Posting Boarding Pass Photos Is a Bad Idea e,g, hints to traveler's passport and phone number; TB; 9/21/2020
- What to Do If You Lose Your Wallet
Know what's in your wallet;
Cancel your credit and debit cards;
Call a Non-Emergency Helpline;
Update your subscriptions and online accounts;
Get a new drivers license or ID;
Replace your miscellaneous cards;
Request a credit report and initiate a fraud alert; LH; 9/17/2020 - How to Become a U.S.-Based Digital Nomad LH; 9/16/2020
- How to Keep Your Wallet Safe When You Travel LH; 5/5/2020
- A Case for Paying With Your Phone NYT; 2/5/2020
- Only three of the Top 100 international airports pass basic security checks Tests involved scanning public websites, mobile apps, and exposures of sensitive airport data on public code repositories and the dark web; ZD; 2/3/2020