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Max 3 files, 10 MB each
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In the App

Security Modes in Action

When sending images or file attachments, choose from 9 security modes to control exactly how your content is accessed.

City of Hats Security Modes for Images
Image Attachments
City of Hats Security Modes for File Attachments
File Attachments
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1 v3_mode_1_name 2 v3_mode_2_name 3 v3_mode_3_name 4 v3_mode_4_name 5 v3_mode_5_name 6 v3_mode_6_name 7 v3_mode_7_name 8 v3_mode_8_name 9 v3_mode_9_name
1

v3_mode_1_name

sm_mode_1_long

Sender-controlled Text Files Images
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2

v3_mode_2_name

sm_mode_2_long

Sender-controlled Text Files Images Reversible
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sm_mode_2_usecase

3

v3_mode_3_name

sm_mode_3_long

Sender-controlled Files Images PIN required
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sm_mode_3_usecase

4

v3_mode_4_name

sm_mode_4_long

Sender-controlled Files Images Payment gate
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sm_mode_4_usecase

5

v3_mode_5_name

sm_mode_5_long

Recipient-verified Text Files Images Biometric
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sm_mode_5_usecase

6

v3_mode_6_name

sm_mode_6_long

Sender-controlled Text Files GPS required
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sm_mode_6_usecase

7

v3_mode_7_name

sm_mode_7_long

Recipient-verified Text Files Voice match
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8

v3_mode_8_name

sm_mode_8_long

Recipient action Text Files Images Touch required
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sm_mode_8_usecase

9

v3_mode_9_name

sm_mode_9_long

Sender-controlled Text Files Audit trail
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ModeControlled byReversibleWorks withAuthentication
v3_mode_1_name Sender ✗ No Text, Files, Images None
v3_mode_2_name Sender ✓ Yes Text, Files, Images None
v3_mode_3_name Sender ✗ No Files, Images PIN code
v3_mode_4_name Sender ✗ No Files, Images Payment
v3_mode_5_name Recipient ✗ No Text, Files, Images Face liveness
v3_mode_6_name Sender ✗ No Text, Files GPS location
v3_mode_7_name Recipient ✗ No Text, Files Voice match
v3_mode_8_name Recipient ✗ No Text, Files, Images Continuous touch
v3_mode_9_name Sender ✗ No Text, Files Crypto signature
1. v3_mode_1_name
Controlled bySender
ReversibleNo
Works withText, Files, Images
AuthenticationNone
2. v3_mode_2_name
Controlled bySender
ReversibleYes
Works withText, Files, Images
AuthenticationNone
3. v3_mode_3_name
Controlled bySender
ReversibleNo
Works withFiles, Images
AuthenticationPIN code
4. v3_mode_4_name
Controlled bySender
ReversibleNo
Works withFiles, Images
AuthenticationPayment
5. v3_mode_5_name
Controlled byRecipient
ReversibleNo
Works withText, Files, Images
AuthenticationFace liveness
6. v3_mode_6_name
Controlled bySender
ReversibleNo
Works withText, Files
AuthenticationGPS location
7. v3_mode_7_name
Controlled byRecipient
ReversibleNo
Works withText, Files
AuthenticationVoice match
8. v3_mode_8_name
Controlled byRecipient
ReversibleNo
Works withText, Files, Images
AuthenticationContinuous touch
9. v3_mode_9_name
Controlled bySender
ReversibleNo
Works withText, Files
AuthenticationCrypto signature

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