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Travel & hotels
Glyph
Travel and Leisure Vol 1
Do not disturb, private, privacy
Black
512x512
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Signs & symbols
Buttons
Block, L, delete
Firebrick
Mixed
Simple files
Lock, secure, privacy
iOS7 optimized
Miu
private, Protection, safety
locked, protect, security
UI
Very Basic. Android L (Lollipop)
private, Lock, protect
secure, protect, Key
Unique-Round-Blue
Unlock, password, Safe
DeepSkyBlue
Social Media
Grid, gaming, private
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Mobile apps
app types in grey
Safe, security, secure
DarkSlateGray
Windows 8 metro style
private
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Windows 8 icons
26x26
Business & finance
Duesseldorf
Lock, private, login
32x32
Token
Lock, Closed, private
128x128