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
- Court Rules Government Can’t Search Your Phone at the Airport for No Reason The ruling is a significant win for privacy rights of Americans and tourists traveling to the US; MB; 11/12/2019
- US border officials are increasingly denying entry to travelers over others’ social media CBP searched 30,000 devices last year without a warrant, up ~4x from three years prior; TC; 8/27/2019
- China Is Forcing Tourists to Install Text-Stealing Malware at its Border Xinjiang region; Android; downloads a tourist's text messages, calendar entries, and phone logs, as well as scans the device for over 70,000 different files; MB; 7/2/2019
- Senators (Wyden & Paul) propose bill requiring warrants to search devices at the border CNet; 5/22/2019
- Canada Border Services seizes lawyer's phone, laptop for not sharing passwords CBC; 5/5/2019
- ACLU says info uncovered through its lawsuit show CBP and ICE have "near-unfettered" authority to search and seize travelers' electronic devices at the border violations of 1st and 4th Amendments; ACLU; 4/30/2019
- Former Mozilla CTO was detained at US border and told he had no right to a lawyer US citizen; 4/4/2019
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
- 3 Tips For Using Your Cellphone Internationally AARP; 8/20/2019
- The Key to Cheap Internet Service: a Local SIM Card NYT; 4/9/2019
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
- How to Share Internet Between Your Devices When You're Away From Home LH; 12/26/2019
- Use a 'USB Condom' to Protect Your Devices at Public Chargers LH; 12/3/2019
- Stop! Don’t Charge Your Phone This Way think twice before plugging into USB at an airport or on the train; 'juice jacking'; NYT; 11/18/2019
- Wake Up! Your House Is Calling Smart technology can make it easier to keep tabs on your home when you’re on vacation, but it also makes it harder to really get away; NYT; 8/23/2019
- Americans would rather get food poisoning on vacation than not have internet access lost luggage: 54%; no internet access: 49%; food poisoning: 47%; consistent bad weather: 47%; lost credit card: 44%; 8/13/2019
- I Opted Out of Facial Recognition at the Airport -- It Wasn't Easy Wired; 7/2/2019
- How to Avoid Getting Scammed When Traveling LH; 6/28/2019
- A Comprehensive Guide to Taking Your Smartphone Abroad for Cheap For $15 to $40, you can easily take your phone to a foreign country and enjoy access to apps, maps and the web; easy/expensive: your US carrier; harder/cheaper: unlock phone, obtain foreign SIM card, prepare phone; NYT; 6/26/2019
- Everybody Hates the Key Card. Will Your Phone Replace It? NYT; 6/6/2019
- 5 Financial Security Measures to Take Before Traveling
1. Research the Scams That Are Common In the City You're Traveling To;
2. Be Wary of Property Rental Owners Asking For an Immediate Down Payment;
3. Make Sure Your Phone Is Password Or Fingerprint-Protected;
4. Take Care Of Your Online Finances Before Heading To the Airport;
5. Consider Buying a Wallet Or Money Belt with RFID-Blocking Technology; MF; 5/30/2019 - How Hackers Can Steal Your Data at Airports plugging into a public USB port; LH; 5/23/2019
- These Smart Devices Protect Your Home While You're on Vacation
the basics: Lighting timers and smart plugs;
budget-friendly upgrades: Security cameras and smart lights;
the works: Smart locks, thermostats, and security systems; NYT; 5/2/2019 - Review of 1,500 hotels across 54 countries: ~67% of hotel websites inadvertently leak guests' booking info to third-party sites like ad and analytics services allowing others to view your personal data or even cancel your reservation; 4/9/2019
- How to Leave No Trace on a Borrowed Computer private browsing; history, downloads, searches; apps: Recent Files; Giz; 3/29/2019
- How to conserve mobile data by turning off iTunes and other downloads in iOS
Settings > Music > Cellular Data; Settings > Cellular > Cellular Data; Settings > iTunes & App Store > Use Cellular Data
; MW; 3/25/2019 - How to Switch Out (and Store) Your SIM Card When You Travel LH; 3/22/2019
- The Best Ways to Use Google Translate in a Foreign Country LH; 3/20/2019
- Do All These Things Before Traveling Internationally LH; 3/8/2019
- Airline e-ticketing systems put passenger data at risk emails with unencrypted check-in links; beta; 2/6/2019
- How to Safeguard Your Tech, and Your Money, While Traveling avoid unsecured Wi-Fi; forwarding phone no.; throwaway email address; encrypted device; own charger; virtual credit cards; credit monitoring; NYT; 2/4/2019