Xiaomi Smart Pen

Xiaomi Smart Pen
Security Grade D Calculator v1	Xiaomi Smart Pen (2nd generation) Brand: Xiaomi (Parent: Xiaomi) Category: Stylus • Model / Gen: 2 M2107K1PU Release Date: 2023-04-18 • Status: In sale Classification Date: 2025-10-14 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	Rare	🔗 Proof
Known vulnerabilities	None	🔗 Proof
Prior attacks	None	🔗 Proof
Updatability	Very common	https://source.android.com/docs/accessories/stylus 🔗 Proof
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	No	https://source.android.com/docs/accessories/stylus 🔗 Proof
Communications	Encrypted with up-to-date encryption	https://developer.android.com/reference/android/bluetooth/BluetoothGatt 🔗 Proof
Storage	No encryption	[no 🔗 Proof]
Category Score	Score: 3 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Absent	https://source.android.com/docs/accessories/stylus 🔗 Proof
Authentication	Absent	https://source.android.com/docs/accessories/stylus 🔗 Proof
Brute-force protection	Absent	[no 🔗 Proof]
Event logging	Absent	[no 🔗 Proof]
Passwords	Default/Common/Easy to guess	[no 🔗 Proof]
Category Score	Score: 3 / 3

Technical Specifications

Property	Details
Operating System & App	N/A (Companion App: Xiaomi Notes)
Hardware (CPU / GPU)	CPU: N/A • GPU: N/A
Memory & Storage	Memory: 0 MB on-device • Storage: 0 MB
Power, Battery & Charging	Battery: 40 mAh • Power: 0.2 W • Charging: Magnetic snap wireless charge on Pad 6 series side; < 1 h full, 2 min = 20 min writing
Display & Camera	Display: N/A • Camera: N/A
Sound & Connectivity	Sound: N/A • Connectivity: Bluetooth 5.1 (BLE), 4096-level pressure sensing, 240 Hz report rate, magnetic attachment + power-off
Physical (Dimensions & Mass)	Dimensions: 160 × 8 × 8 mm • Mass: 13g