diff --git a/CHANGELOG.md b/CHANGELOG.md
index deb55e3..7adcee1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Added support for NXP MIFARE Classic (1K, 4K variants) in `PcscCardCommunicationProtocol` with ATR pattern
+  `3B8F8001804F0CA00000030603000(1|2).*` according to PC/SC Part 3 Supplemental Document.
+### Changed
+- Changed default sharing mode from `EXCLUSIVE` to `SHARED` in `PcscReader.setSharingMode()` to improve compatibility
+  with multi-threaded applications.
 ### Fixed
 - Fixed PC/SC context contention on Linux by implementing separate contexts for monitoring and communication operations,
   preventing `SCARD_E_SHARING_VIOLATION` errors and thread blocking when using card presence detection concurrently with
diff --git a/gradle.properties b/gradle.properties
index ea95467..59932cf 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@
 group = org.eclipse.keyple
 title = Keyple Plugin PCSC Java Lib
 description = Keyple add-on to manage PC/SC readers
-version = 2.5.4-SNAPSHOT
+version = 2.6.0-SNAPSHOT
 
 # Java Configuration
 javaSourceLevel = 1.8
diff --git a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscCardCommunicationProtocol.java b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscCardCommunicationProtocol.java
index f169020..8ae835d 100644
--- a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscCardCommunicationProtocol.java
+++ b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscCardCommunicationProtocol.java
@@ -67,6 +67,23 @@ public enum PcscCardCommunicationProtocol {
    */
   INNOVATRON_B_PRIME("3B8.8001(80)?5A0A.*"),
 
+  /**
+   * NXP MIFARE Classic technologies (1K, 4K variants).
+   *
+   * <p>According to PC/SC Part 3 Supplemental Document:
+   *
+   * <ul>
+   *   <li>Initial bytes: 3B8F8001804F0CA0000003
+   *   <li>Card protocol: 0603 (ISO 14443 A part 3)
+   *   <li>Card type: Variable (depends on memory capacity)
+   * </ul>
+   *
+   * <p>Default rule = <b>{@code 3B8F8001804F0CA00000030603000(1|2).*}</b>
+   *
+   * @since 2.6.0
+   */
+  MIFARE_CLASSIC("3B8F8001804F0CA00000030603000(1|2).*"),
+
   /**
    * NXP MIFARE Ultralight technologies.
    *
@@ -78,11 +95,11 @@ public enum PcscCardCommunicationProtocol {
    *   <li>Card type: 0003 (for Mifare UL)
    * </ul>
    *
-   * <p>Default rule = <b>{@code 3B8F8001804F0CA0000003060300030.*}</b>
+   * <p>Default rule = <b>{@code 3B8F8001804F0CA000000306030003.*}</b>
    *
    * @since 2.5.0
    */
-  MIFARE_ULTRALIGHT("3B8F8001804F0CA0000003060300030.*"),
+  MIFARE_ULTRALIGHT("3B8F8001804F0CA000000306030003.*"),
 
   /**
    * STMicroelectronics ST25/SRT512 memory tags.
diff --git a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReader.java b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReader.java
index 3fa1eeb..d87d587 100644
--- a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReader.java
+++ b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReader.java
@@ -154,7 +154,7 @@ enum DisconnectionMode {
   }
 
   /**
-   * Changes the PC/SC sharing mode (default value {@link SharingMode#EXCLUSIVE}).
+   * Changes the PC/SC sharing mode (default value {@link SharingMode#SHARED}).
    *
    * <p>This mode will be used when a new {@link Card} is created.
    *
diff --git a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReaderAdapter.java b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReaderAdapter.java
index 68230b3..04ff454 100644
--- a/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReaderAdapter.java
+++ b/src/main/java/org/eclipse/keyple/plugin/pcsc/PcscReaderAdapter.java
@@ -54,7 +54,7 @@ final class PcscReaderAdapter
   private CardChannel channel;
   private Boolean isContactless;
   private String protocol = IsoProtocol.ANY.getValue();
-  private boolean isModeExclusive = true;
+  private boolean isModeExclusive = false;
   private DisconnectionMode disconnectionMode = DisconnectionMode.RESET;
   private final AtomicBoolean loopWaitCard = new AtomicBoolean();
 
@@ -599,7 +599,7 @@ public void stopWaitForCardRemoval() {
   /**
    * {@inheritDoc}
    *
-   * <p>The default value is {@link SharingMode#EXCLUSIVE}.
+   * <p>The default value is {@link SharingMode#SHARED}.
    *
    * @since 2.0.0
    */