Sign a document on an Android or tablet

Document formats

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You can sign most document types directly on your Android device. The most common formats are:

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• PDF files — widely used for contracts and legal documents.
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• Word documents (DOCX) — often used for internal and draft agreements.
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• Image files — occasionally used but less common for formal business contracts.
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Most Android eSignature apps focus on PDF signing due to its universal structure.

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Signing methods

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There are several ways to apply an electronic signature on Android:

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• eSignature apps — Platforms like DocuChain allow you to upload, sign, and share documents entirely online.
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• Built-in PDF viewers — Apps like Google Drive and Adobe Acrobat Reader support basic signing functions.
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• Drawn signatures — Some apps let you draw your signature on-screen using a finger or stylus. This method works for informal documents but may not meet legal standards for official contracts.
  
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Legal rules

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When you use a trusted eSignature app on Android, your signature is legally valid in most countries. Reliable platforms:
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• follow eIDAS, UETA, and ESIGN Act regulations
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• record timestamps and identity verification
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• create full audit trails for every signed document
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This makes electronically signed documents enforceable across various jurisdictions.

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Security tips

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To keep your document signing on Android secure:
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• Use verified eSignature platforms like DocuChain
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• Enable two-factor authentication
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• Ensure device encryption and password protection
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• Keep all apps and system software updated
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• Store documents on secure, trusted cloud services
  
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Use Android eSign

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Android eSignature tools are especially useful when:

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• signing contracts while traveling
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• closing deals with remote partners
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• managing urgent business agreements
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• approving internal documents quickly
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Sign documents online

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DocuChain allows you to eSign documents directly from any Android phone or tablet — secure, fast, and fully transparent. Sign for free

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