diff --git a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
index 5b0b303cc0..88b2a265dc 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
@@ -233,8 +233,6 @@ interface IKeyMintDevice {
      * indistinguishable from random.  Thus, if the entropy from any source is good, the output
      * must be good.
      *
-     * TODO(seleneh) specify what mixing functions and cprng we allow.
-     *
      * @param data Bytes to be mixed into the CRNG seed.  The caller must not provide more than 2
      *        KiB of data per invocation.
      *
diff --git a/security/keymint/aidl/android/hardware/security/keymint/KeyMintHardwareInfo.aidl b/security/keymint/aidl/android/hardware/security/keymint/KeyMintHardwareInfo.aidl
index 8da75784de..b82dee626b 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/KeyMintHardwareInfo.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/KeyMintHardwareInfo.aidl
@@ -29,7 +29,6 @@ parcelable KeyMintHardwareInfo {
      * Implementation version of the keymint hardware.  The version number is implementation
      * defined, and not necessarily globally meaningful.  The version is used to distinguish
      * between different versions of a given implementation.
-     * TODO(seleneh) add the version related info to the code.
      */
     int versionNumber;
 
diff --git a/security/keymint/aidl/android/hardware/security/keymint/PaddingMode.aidl b/security/keymint/aidl/android/hardware/security/keymint/PaddingMode.aidl
index fbb373b873..e71a9c92cb 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/PaddingMode.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/PaddingMode.aidl
@@ -17,8 +17,6 @@
 package android.hardware.security.keymint;
 
 /**
- * TODO(seleneh) update the description.
- *
  * Padding modes that may be applied to plaintext for encryption operations.  This list includes
  * padding modes for both symmetric and asymmetric algorithms.  Note that implementations should not
  * provide all possible combinations of algorithm and padding, only the
diff --git a/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl b/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
index 861084eb23..972ce2e5c7 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
@@ -268,10 +268,6 @@ enum Tag {
     USAGE_EXPIRE_DATETIME = TagType.DATE | 402,
 
     /**
-     * TODO(seleneh) this tag need to be deleted.
-     *
-     * TODO(seleneh) this tag need to be deleted.
-     *
      * Tag::MIN_SECONDS_BETWEEN_OPS specifies the minimum amount of time that elapses between
      * allowed operations using a key.  This can be used to rate-limit uses of keys in contexts
      * where unlimited use may enable brute force attacks.
@@ -289,6 +285,8 @@ enum Tag {
      * fails because the table is full, KeyMint returns ErrorCode::TOO_MANY_OPERATIONS.
      *
      * Must be hardware-enforced.
+     *
+     * TODO(b/191458710): find out if this tag is still supported.
      */
     MIN_SECONDS_BETWEEN_OPS = TagType.UINT | 403,
 
@@ -876,6 +874,7 @@ enum Tag {
     STORAGE_KEY = TagType.BOOL | 722,
 
     /**
+     * OBSOLETE: Do not use. See IKeyMintOperation.updateAad instead.
      * TODO: Delete when keystore1 is deleted.
      */
     ASSOCIATED_DATA = TagType.BYTES | 1000,