ScanLens / Blog

Practical writing on scanning, paper, and privacy.

Guides and essays by the team building the ScanLens document scanner for iPhone. No fluff, no affiliate lists — just the thinking behind the product.

All Posts

12 articles
01

Does the IRS Accept Digital Receipts? What the Rules Require

Digital tax records can be acceptable, but a photo alone is not enough. Learn IRS rules for legibility, evidence, retention, and the limited $75 exception.

02

Which Documents Should You Keep as Paper Originals?

A conservative keep-or-scan framework for identity, legal, property, tax, and family records, with current US government sources.

03

iPhone Scanner vs Flatbed: Which Should You Use?

Choose an iPhone, flatbed, copy stand, or document feeder by document type, preservation value, geometry, speed, and required output.

04

How to Organize Digital Documents Without Losing Them Later

Build a maintainable document system with an inbox, stable names, clear folders, retention decisions, 3-2-1 backups, and restore tests.

05

How to Scan Receipts for Tax Season Without a Year-End Rescue

A daily, weekly, monthly, and year-end receipt workflow grounded in IRS recordkeeping guidance and designed around reconciliation and recovery.

06

Is CamScanner Safe in 2026? What the Evidence Shows

A source-based review of CamScanner: the 2019 Android incident, current App Store privacy disclosures, what is known, and what is not.

07

Are E-Signatures Legally Binding? Rules, Evidence, and Limits

E-signatures are generally recognized, but validity depends on intent, consent, formalities, evidence, document type, and governing law.

08

How to Scan Old Photos with an iPhone Without Losing Context

Capture useful copies of old photographs with an iPhone, avoid glare and damage, record front-and-back context, and know when to use a flatbed or specialist.

09

Self-Employed Tax Deduction Records: What to Keep and Why

A source-based US recordkeeping checklist for Schedule C income, expenses, assets, vehicle use, travel, meals, home office, and supporting documents.

10

How to Set Up a Paperless Home Office That You Can Recover

A staged paperless-office plan covering triage, scanning, quality checks, original retention, naming, backup, secure disposal, and recovery.

11

On-Device OCR vs Cloud OCR: Privacy, Accuracy, and Trade-Offs

Compare local and server-side OCR by data path, offline behavior, latency, accuracy, document structure, retention, and vendor controls.

12

Is the iPhone Built-In Document Scanner Enough?

A current, task-based comparison of Apple Notes, Preview, Markup, and a dedicated iPhone scanner app without invented usage percentages.